/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:01:02,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:01:02,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:01:02,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:01:02,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:01:02,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:01:02,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:01:02,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:01:02,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:01:02,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:01:02,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:01:02,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:01:02,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:01:02,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:01:02,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:01:02,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:01:02,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:01:02,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:01:02,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:01:02,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:01:02,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:01:02,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:01:02,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:01:02,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:01:02,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:01:02,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:01:02,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:01:02,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:01:02,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:01:02,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:01:02,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:01:02,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:01:02,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:01:02,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:01:02,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:01:02,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:01:02,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:01:02,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:01:02,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:01:02,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:01:02,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:01:02,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:01:02,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:01:02,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:01:02,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:01:02,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:01:02,752 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:01:02,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:01:02,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:01:02,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:01:02,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:01:02,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:01:02,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:01:02,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:01:02,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:01:02,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:01:02,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:01:02,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:01:02,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:01:02,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:01:02,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:01:02,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:01:02,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:01:02,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:01:02,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:01:02,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:01:02,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:01:02,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:01:02,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:01:02,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:01:02,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:01:03,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:01:03,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:01:03,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:01:03,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:01:03,222 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:01:03,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2021-02-19 17:01:03,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b09de1c/eff4f62d7df04843b14cd598bdab74d6/FLAG4f0cd5eda [2021-02-19 17:01:03,932 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:01:03,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2021-02-19 17:01:03,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b09de1c/eff4f62d7df04843b14cd598bdab74d6/FLAG4f0cd5eda [2021-02-19 17:01:04,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b09de1c/eff4f62d7df04843b14cd598bdab74d6 [2021-02-19 17:01:04,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:01:04,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:01:04,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:01:04,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:01:04,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:01:04,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393ab39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04, skipping insertion in model container [2021-02-19 17:01:04,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:01:04,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:01:04,549 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_spec2_product34.cil.c[4065,4078] [2021-02-19 17:01:04,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:01:04,776 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:01:04,807 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_spec2_product34.cil.c[4065,4078] [2021-02-19 17:01:04,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:01:04,903 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:01:04,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04 WrapperNode [2021-02-19 17:01:04,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:01:04,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:01:04,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:01:04,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:01:04,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (1/1) ... [2021-02-19 17:01:04,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:01:05,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:01:05,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:01:05,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:01:05,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (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 [2021-02-19 17:01:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:01:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:01:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-19 17:01:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:01:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-19 17:01:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-19 17:01:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-19 17:01:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-19 17:01:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:01:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-19 17:01:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-19 17:01:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-19 17:01:05,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-19 17:01:05,154 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-19 17:01:05,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-19 17:01:05,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-19 17:01:05,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-19 17:01:05,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-19 17:01:05,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-19 17:01:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-19 17:01:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-19 17:01:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-19 17:01:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-19 17:01:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-19 17:01:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-19 17:01:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-19 17:01:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:01:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:01:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-19 17:01:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-19 17:01:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-19 17:01:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-19 17:01:05,162 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-19 17:01:05,162 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-19 17:01:05,162 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-19 17:01:05,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-19 17:01:05,162 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-19 17:01:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:01:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-19 17:01:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-19 17:01:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:01:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-19 17:01:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:01:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-19 17:01:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-19 17:01:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:01:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-19 17:01:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-19 17:01:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:01:05,166 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-19 17:01:05,166 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-19 17:01:05,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-19 17:01:05,167 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-19 17:01:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-19 17:01:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-19 17:01:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-19 17:01:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-19 17:01:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-19 17:01:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-19 17:01:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:01:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:01:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:01:06,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:01:06,718 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-19 17:01:06,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:01:06 BoogieIcfgContainer [2021-02-19 17:01:06,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:01:06,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:01:06,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:01:06,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:01:06,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:01:04" (1/3) ... [2021-02-19 17:01:06,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2065079b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:01:06, skipping insertion in model container [2021-02-19 17:01:06,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:01:04" (2/3) ... [2021-02-19 17:01:06,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2065079b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:01:06, skipping insertion in model container [2021-02-19 17:01:06,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:01:06" (3/3) ... [2021-02-19 17:01:06,753 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2021-02-19 17:01:06,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:01:06,783 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:01:06,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:01:06,867 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:01:06,868 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:01:06,868 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:01:06,868 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:01:06,868 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:01:06,868 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:01:06,868 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:01:06,868 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:01:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2021-02-19 17:01:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-19 17:01:06,921 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:06,922 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] [2021-02-19 17:01:06,922 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1382588880, now seen corresponding path program 1 times [2021-02-19 17:01:06,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:06,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331175916] [2021-02-19 17:01:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:07,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:07,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:07,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:07,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:07,999 WARN L202 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:08,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-02-19 17:01:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-19 17:01:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:08,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:08,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:08,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331175916] [2021-02-19 17:01:08,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:08,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:01:08,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846567514] [2021-02-19 17:01:08,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:01:08,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:08,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:01:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:01:08,166 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2021-02-19 17:01:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:09,950 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2021-02-19 17:01:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 17:01:09,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-19 17:01:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:09,967 INFO L225 Difference]: With dead ends: 258 [2021-02-19 17:01:09,967 INFO L226 Difference]: Without dead ends: 145 [2021-02-19 17:01:09,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:01:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-02-19 17:01:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2021-02-19 17:01:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-19 17:01:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2021-02-19 17:01:10,122 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2021-02-19 17:01:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:10,122 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2021-02-19 17:01:10,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:01:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2021-02-19 17:01:10,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-19 17:01:10,128 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:10,128 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] [2021-02-19 17:01:10,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:01:10,129 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2096081404, now seen corresponding path program 1 times [2021-02-19 17:01:10,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:10,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724395318] [2021-02-19 17:01:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:10,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,904 WARN L202 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-19 17:01:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-19 17:01:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:10,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:10,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:10,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724395318] [2021-02-19 17:01:10,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:10,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:01:10,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158291150] [2021-02-19 17:01:10,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:01:10,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:10,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:01:10,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:01:10,998 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 5 states. [2021-02-19 17:01:12,022 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:13,319 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2021-02-19 17:01:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 17:01:13,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-02-19 17:01:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:13,329 INFO L225 Difference]: With dead ends: 199 [2021-02-19 17:01:13,330 INFO L226 Difference]: Without dead ends: 135 [2021-02-19 17:01:13,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:01:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-19 17:01:13,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2021-02-19 17:01:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-02-19 17:01:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2021-02-19 17:01:13,376 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2021-02-19 17:01:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:13,377 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2021-02-19 17:01:13,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:01:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2021-02-19 17:01:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-19 17:01:13,380 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:13,380 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] [2021-02-19 17:01:13,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:01:13,380 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1816307927, now seen corresponding path program 1 times [2021-02-19 17:01:13,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:13,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496975346] [2021-02-19 17:01:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:13,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:13,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:13,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:13,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:13,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:01:13,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:01:13,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:01:13,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:13,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,156 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 17:01:14,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:14,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-19 17:01:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-19 17:01:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:14,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:14,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:14,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496975346] [2021-02-19 17:01:14,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:14,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 17:01:14,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549217088] [2021-02-19 17:01:14,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 17:01:14,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:14,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 17:01:14,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:01:14,306 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 9 states. [2021-02-19 17:01:15,130 WARN L202 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:01:15,937 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:16,675 WARN L202 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:17,463 WARN L202 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:19,439 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2021-02-19 17:01:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 17:01:19,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2021-02-19 17:01:19,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:19,443 INFO L225 Difference]: With dead ends: 212 [2021-02-19 17:01:19,444 INFO L226 Difference]: Without dead ends: 135 [2021-02-19 17:01:19,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-02-19 17:01:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-19 17:01:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2021-02-19 17:01:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-02-19 17:01:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-02-19 17:01:19,483 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2021-02-19 17:01:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:19,484 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-02-19 17:01:19,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 17:01:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-02-19 17:01:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-19 17:01:19,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:19,487 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] [2021-02-19 17:01:19,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:01:19,487 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:19,488 INFO L82 PathProgramCache]: Analyzing trace with hash 364376360, now seen corresponding path program 1 times [2021-02-19 17:01:19,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:19,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564787764] [2021-02-19 17:01:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:19,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:19,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:19,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:19,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:19,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:19,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:19,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:19,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:19,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:19,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:19,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:19,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,246 WARN L202 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:20,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-19 17:01:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:20,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:01:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:01:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-19 17:01:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-19 17:01:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:20,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:20,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:20,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564787764] [2021-02-19 17:01:20,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:20,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 17:01:20,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811077409] [2021-02-19 17:01:20,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:01:20,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:01:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:01:20,397 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2021-02-19 17:01:21,222 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:01:23,745 WARN L202 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:24,908 INFO L93 Difference]: Finished difference Result 302 states and 382 transitions. [2021-02-19 17:01:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 17:01:24,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2021-02-19 17:01:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:24,914 INFO L225 Difference]: With dead ends: 302 [2021-02-19 17:01:24,914 INFO L226 Difference]: Without dead ends: 225 [2021-02-19 17:01:24,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-19 17:01:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-02-19 17:01:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2021-02-19 17:01:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-02-19 17:01:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2021-02-19 17:01:24,976 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 65 [2021-02-19 17:01:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:24,977 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2021-02-19 17:01:24,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:01:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2021-02-19 17:01:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-02-19 17:01:24,979 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:24,979 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] [2021-02-19 17:01:24,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 17:01:24,980 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:24,981 INFO L82 PathProgramCache]: Analyzing trace with hash -171567052, now seen corresponding path program 1 times [2021-02-19 17:01:24,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:24,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481496537] [2021-02-19 17:01:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,781 WARN L202 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-19 17:01:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:01:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 17:01:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:01:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-19 17:01:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-19 17:01:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:25,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:25,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:25,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481496537] [2021-02-19 17:01:25,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:25,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 17:01:25,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432770470] [2021-02-19 17:01:25,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 17:01:25,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:25,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 17:01:25,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:01:25,941 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 9 states. [2021-02-19 17:01:26,857 WARN L202 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:01:29,149 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:29,924 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:30,636 WARN L202 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:31,296 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:01:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:33,256 INFO L93 Difference]: Finished difference Result 524 states and 670 transitions. [2021-02-19 17:01:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 17:01:33,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2021-02-19 17:01:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:33,261 INFO L225 Difference]: With dead ends: 524 [2021-02-19 17:01:33,261 INFO L226 Difference]: Without dead ends: 376 [2021-02-19 17:01:33,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2021-02-19 17:01:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-02-19 17:01:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 300. [2021-02-19 17:01:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2021-02-19 17:01:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 346 transitions. [2021-02-19 17:01:33,356 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 346 transitions. Word has length 79 [2021-02-19 17:01:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:33,356 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 346 transitions. [2021-02-19 17:01:33,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 17:01:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 346 transitions. [2021-02-19 17:01:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-19 17:01:33,359 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:33,359 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] [2021-02-19 17:01:33,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 17:01:33,360 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash 833710232, now seen corresponding path program 1 times [2021-02-19 17:01:33,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:33,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22735066] [2021-02-19 17:01:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:33,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:33,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:33,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,111 WARN L202 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-19 17:01:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-19 17:01:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:34,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:01:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 17:01:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:01:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-19 17:01:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-02-19 17:01:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:34,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:34,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:34,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22735066] [2021-02-19 17:01:34,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:34,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-19 17:01:34,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167648051] [2021-02-19 17:01:34,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 17:01:34,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:34,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 17:01:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-19 17:01:34,279 INFO L87 Difference]: Start difference. First operand 300 states and 346 transitions. Second operand 10 states. [2021-02-19 17:01:35,241 WARN L202 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:01:37,572 WARN L202 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:38,253 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:01:38,988 WARN L202 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:39,758 WARN L202 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:42,029 INFO L93 Difference]: Finished difference Result 686 states and 861 transitions. [2021-02-19 17:01:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-19 17:01:42,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2021-02-19 17:01:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:42,035 INFO L225 Difference]: With dead ends: 686 [2021-02-19 17:01:42,035 INFO L226 Difference]: Without dead ends: 414 [2021-02-19 17:01:42,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2021-02-19 17:01:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-02-19 17:01:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 299. [2021-02-19 17:01:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2021-02-19 17:01:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 343 transitions. [2021-02-19 17:01:42,135 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 343 transitions. Word has length 83 [2021-02-19 17:01:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:42,136 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 343 transitions. [2021-02-19 17:01:42,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-19 17:01:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 343 transitions. [2021-02-19 17:01:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-19 17:01:42,138 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:42,138 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] [2021-02-19 17:01:42,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 17:01:42,139 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -261983678, now seen corresponding path program 1 times [2021-02-19 17:01:42,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:42,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684496765] [2021-02-19 17:01:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,798 WARN L202 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-19 17:01:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-19 17:01:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:42,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:42,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:01:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:01:42,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:01:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 17:01:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:01:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:42,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:42,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-19 17:01:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:43,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:43,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-19 17:01:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:43,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:43,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:43,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684496765] [2021-02-19 17:01:43,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:43,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-19 17:01:43,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795001484] [2021-02-19 17:01:43,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 17:01:43,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:43,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 17:01:43,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-19 17:01:43,040 INFO L87 Difference]: Start difference. First operand 299 states and 343 transitions. Second operand 10 states. [2021-02-19 17:01:44,851 WARN L202 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-19 17:01:45,552 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-19 17:01:46,251 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:46,913 WARN L202 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:48,251 INFO L93 Difference]: Finished difference Result 689 states and 871 transitions. [2021-02-19 17:01:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 17:01:48,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2021-02-19 17:01:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:48,256 INFO L225 Difference]: With dead ends: 689 [2021-02-19 17:01:48,256 INFO L226 Difference]: Without dead ends: 418 [2021-02-19 17:01:48,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-02-19 17:01:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-02-19 17:01:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 309. [2021-02-19 17:01:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2021-02-19 17:01:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 353 transitions. [2021-02-19 17:01:48,343 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 353 transitions. Word has length 84 [2021-02-19 17:01:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:48,344 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 353 transitions. [2021-02-19 17:01:48,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-19 17:01:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 353 transitions. [2021-02-19 17:01:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-19 17:01:48,346 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:48,346 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] [2021-02-19 17:01:48,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 17:01:48,347 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:48,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1124219716, now seen corresponding path program 1 times [2021-02-19 17:01:48,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:48,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753864271] [2021-02-19 17:01:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:48,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:48,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:48,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:48,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:48,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:48,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:48,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:48,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:48,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:48,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,179 WARN L202 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:49,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-19 17:01:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-19 17:01:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:01:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:49,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:49,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 17:01:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:01:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-19 17:01:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-19 17:01:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:49,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:49,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:49,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753864271] [2021-02-19 17:01:49,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:49,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-19 17:01:49,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802776191] [2021-02-19 17:01:49,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-19 17:01:49,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-19 17:01:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-02-19 17:01:49,391 INFO L87 Difference]: Start difference. First operand 309 states and 353 transitions. Second operand 12 states. [2021-02-19 17:01:50,619 WARN L202 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:51,350 WARN L202 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:52,015 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:53,496 WARN L202 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:54,272 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:54,973 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-19 17:01:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:01:57,156 INFO L93 Difference]: Finished difference Result 713 states and 911 transitions. [2021-02-19 17:01:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-19 17:01:57,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2021-02-19 17:01:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:01:57,166 INFO L225 Difference]: With dead ends: 713 [2021-02-19 17:01:57,166 INFO L226 Difference]: Without dead ends: 432 [2021-02-19 17:01:57,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-02-19 17:01:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-02-19 17:01:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2021-02-19 17:01:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2021-02-19 17:01:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 361 transitions. [2021-02-19 17:01:57,277 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 361 transitions. Word has length 84 [2021-02-19 17:01:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:01:57,277 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 361 transitions. [2021-02-19 17:01:57,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-19 17:01:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 361 transitions. [2021-02-19 17:01:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-19 17:01:57,283 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:01:57,283 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] [2021-02-19 17:01:57,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-19 17:01:57,284 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:01:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:01:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1059457211, now seen corresponding path program 1 times [2021-02-19 17:01:57,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:01:57,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350572238] [2021-02-19 17:01:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:01:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:57,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:57,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:57,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:57,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:57,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:57,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:57,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:57,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:57,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:57,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 17:01:57,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:57,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:57,989 WARN L202 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:01:57,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:01:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 17:01:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:01:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:01:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:01:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:01:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:01:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-19 17:01:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-19 17:01:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:01:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:01:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:01:58,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 17:01:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:01:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:01:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-19 17:01:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-19 17:01:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:01:58,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:01:58,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:01:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:01:58,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350572238] [2021-02-19 17:01:58,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:01:58,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:01:58,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044614618] [2021-02-19 17:01:58,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:01:58,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:01:58,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:01:58,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:01:58,218 INFO L87 Difference]: Start difference. First operand 317 states and 361 transitions. Second operand 8 states. [2021-02-19 17:01:59,049 WARN L202 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:02:00,287 WARN L202 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:02:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:02:04,322 INFO L93 Difference]: Finished difference Result 1041 states and 1366 transitions. [2021-02-19 17:02:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-19 17:02:04,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2021-02-19 17:02:04,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:02:04,329 INFO L225 Difference]: With dead ends: 1041 [2021-02-19 17:02:04,329 INFO L226 Difference]: Without dead ends: 752 [2021-02-19 17:02:04,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2021-02-19 17:02:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-02-19 17:02:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 607. [2021-02-19 17:02:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2021-02-19 17:02:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 713 transitions. [2021-02-19 17:02:04,509 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 713 transitions. Word has length 84 [2021-02-19 17:02:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:02:04,509 INFO L480 AbstractCegarLoop]: Abstraction has 607 states and 713 transitions. [2021-02-19 17:02:04,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:02:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 713 transitions. [2021-02-19 17:02:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-19 17:02:04,512 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:02:04,512 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] [2021-02-19 17:02:04,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-19 17:02:04,512 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:02:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:02:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash 401705887, now seen corresponding path program 1 times [2021-02-19 17:02:04,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:02:04,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588545746] [2021-02-19 17:02:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:02:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:04,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:04,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:04,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:04,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:02:04,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:04,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:02:04,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:04,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:02:04,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:04,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:02:04,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:04,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,162 WARN L202 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-19 17:02:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:02:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:02:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-19 17:02:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-19 17:02:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 17:02:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-19 17:02:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:02:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-19 17:02:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-19 17:02:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-19 17:02:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-19 17:02:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-19 17:02:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:02:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-19 17:02:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-19 17:02:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:02:05,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:02:05,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:02:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:02:05,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588545746] [2021-02-19 17:02:05,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:02:05,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 17:02:05,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130237268] [2021-02-19 17:02:05,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:02:05,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:02:05,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:02:05,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:02:05,307 INFO L87 Difference]: Start difference. First operand 607 states and 713 transitions. Second operand 8 states. [2021-02-19 17:02:06,421 WARN L202 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-19 17:02:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:02:09,672 INFO L93 Difference]: Finished difference Result 1199 states and 1564 transitions. [2021-02-19 17:02:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-19 17:02:09,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2021-02-19 17:02:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:02:09,683 INFO L225 Difference]: With dead ends: 1199 [2021-02-19 17:02:09,684 INFO L226 Difference]: Without dead ends: 1196 [2021-02-19 17:02:09,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2021-02-19 17:02:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-02-19 17:02:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 975. [2021-02-19 17:02:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2021-02-19 17:02:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1154 transitions. [2021-02-19 17:02:09,910 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1154 transitions. Word has length 88 [2021-02-19 17:02:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:02:09,910 INFO L480 AbstractCegarLoop]: Abstraction has 975 states and 1154 transitions. [2021-02-19 17:02:09,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:02:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1154 transitions. [2021-02-19 17:02:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-19 17:02:09,914 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:02:09,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:02:09,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-19 17:02:09,915 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:02:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:02:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash -832224860, now seen corresponding path program 1 times [2021-02-19 17:02:09,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:02:09,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598253618] [2021-02-19 17:02:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:02:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:02:09,991 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:02:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:02:10,085 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:02:10,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:02:10,260 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:02:10,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-19 17:02:10,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:02:10 BoogieIcfgContainer [2021-02-19 17:02:10,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:02:10,527 INFO L168 Benchmark]: Toolchain (without parser) took 66282.44 ms. Allocated memory was 152.0 MB in the beginning and 327.2 MB in the end (delta: 175.1 MB). Free memory was 126.5 MB in the beginning and 138.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 164.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:02:10,527 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:02:10,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.51 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 104.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:02:10,528 INFO L168 Benchmark]: Boogie Preprocessor took 94.36 ms. Allocated memory is still 152.0 MB. Free memory was 104.6 MB in the beginning and 100.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-19 17:02:10,528 INFO L168 Benchmark]: RCFGBuilder took 1720.42 ms. Allocated memory is still 152.0 MB. Free memory was 100.7 MB in the beginning and 49.2 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.2 MB. Max. memory is 8.0 GB. [2021-02-19 17:02:10,528 INFO L168 Benchmark]: TraceAbstraction took 63803.41 ms. Allocated memory was 152.0 MB in the beginning and 327.2 MB in the end (delta: 175.1 MB). Free memory was 48.7 MB in the beginning and 138.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:02:10,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 648.51 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 104.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.36 ms. Allocated memory is still 152.0 MB. Free memory was 104.6 MB in the beginning and 100.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1720.42 ms. Allocated memory is still 152.0 MB. Free memory was 100.7 MB in the beginning and 49.2 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 63803.41 ms. Allocated memory was 152.0 MB in the beginning and 327.2 MB in the end (delta: 175.1 MB). Free memory was 48.7 MB in the beginning and 138.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 251]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L153] int waterLevel = 1; [L154] int methaneLevelCritical = 0; [L257] int methAndRunningLastTime ; [L500] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L767] int pumpRunning = 0; [L768] int systemActive = 1; VAL [\old(cleanupTimeShifts)=181, \old(head)=183, \old(head)=168, \old(methAndRunningLastTime)=174, \old(methaneLevelCritical)=146, \old(pumpRunning)=141, \old(systemActive)=140, \old(waterLevel)=144, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L125] int retValue_acc ; [L126] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L132] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L322] int retValue_acc ; [L325] retValue_acc = 1 [L326] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L132] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L136] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L137] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L115] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L262] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L115] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L116] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L699] int splverifierCounter ; [L700] int tmp ; [L701] int tmp___0 ; [L702] int tmp___1 ; [L703] int tmp___2 ; [L706] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L708] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L710] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L716] tmp = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L720] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L171] COND TRUE waterLevel < 2 [L172] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L720] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L730] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L183] COND FALSE !(\read(methaneLevelCritical)) [L186] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L730] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND FALSE !(\read(tmp___2)) [L744] tmp___1 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___1) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L774] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L781] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L783] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L803] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L900] int retValue_acc ; [L901] int tmp ; [L902] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L906] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L233] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L236] COND FALSE !(waterLevel < 2) [L240] retValue_acc = 0 [L241] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L906] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L906] tmp = isHighWaterSensorDry() [L908] COND FALSE !(\read(tmp)) [L911] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L913] retValue_acc = tmp___0 [L914] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L808] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] tmp = isHighWaterLevel() [L810] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L812] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L831] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L812] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L783] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L789] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L267] int tmp ; [L268] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L272] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L192] int retValue_acc ; [L195] retValue_acc = methaneLevelCritical [L196] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L272] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L272] tmp = isMethaneLevelCritical() [L274] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L276] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L855] int retValue_acc ; [L858] retValue_acc = pumpRunning [L859] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L276] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L276] tmp___0 = isPumpRunning() [L278] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L279] COND FALSE !(\read(methAndRunningLastTime)) [L284] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L789] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L753] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L708] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L710] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L716] tmp = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND FALSE !(\read(tmp___2)) [L744] tmp___1 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___1) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L774] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L776] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L159] COND TRUE waterLevel > 0 [L160] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L776] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L781] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L783] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L803] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L806] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L821] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L783] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L789] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L267] int tmp ; [L268] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L272] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L192] int retValue_acc ; [L195] retValue_acc = methaneLevelCritical [L196] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L272] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L272] tmp = isMethaneLevelCritical() [L274] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L276] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L855] int retValue_acc ; [L858] retValue_acc = pumpRunning [L859] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L276] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L276] tmp___0 = isPumpRunning() [L278] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L279] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L281] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L251] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 63.3s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 52.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1013 SDtfs, 2884 SDslu, 1179 SDs, 0 SdLazy, 5247 SolverSat, 2117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 262 SyntacticMatches, 3 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 28.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=975occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 921 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 858 NumberOfCodeBlocks, 858 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 717 ConstructedInterpolants, 0 QuantifiedInterpolants, 239519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...