/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:17:50,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:17:50,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:17:50,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:17:50,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:17:50,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:17:50,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:17:50,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:17:50,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:17:50,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:17:50,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:17:50,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:17:50,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:17:50,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:17:50,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:17:50,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:17:50,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:17:50,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:17:50,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:17:50,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:17:50,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:17:50,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:17:50,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:17:50,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:17:50,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:17:50,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:17:50,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:17:50,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:17:50,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:17:50,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:17:50,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:17:50,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:17:50,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:17:50,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:17:50,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:17:50,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:17:50,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:17:50,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:17:50,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:17:50,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:17:50,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:17:50,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:17:50,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:17:50,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:17:50,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:17:50,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:17:50,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:17:50,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:17:50,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:17:50,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:17:50,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:17:50,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:17:50,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:17:50,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:17:50,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:17:50,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:17:50,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:17:50,749 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:17:50,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:17:50,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:17:50,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:17:50,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:17:50,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:17:50,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:17:50,751 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:17:51,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:17:51,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:17:51,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:17:51,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:17:51,227 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:17:51,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2021-02-23 16:17:51,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cab3dbd4/1d1ffe10264b446291a9b2a3f39d4e7f/FLAG556ba1d44 [2021-02-23 16:17:52,001 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:17:52,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2021-02-23 16:17:52,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cab3dbd4/1d1ffe10264b446291a9b2a3f39d4e7f/FLAG556ba1d44 [2021-02-23 16:17:52,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cab3dbd4/1d1ffe10264b446291a9b2a3f39d4e7f [2021-02-23 16:17:52,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:17:52,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:17:52,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:17:52,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:17:52,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:17:52,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:52,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b671501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52, skipping insertion in model container [2021-02-23 16:17:52,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:52,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:17:52,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:17:52,767 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_product43.cil.c[18079,18092] [2021-02-23 16:17:52,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:17:52,785 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:17:52,895 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_product43.cil.c[18079,18092] [2021-02-23 16:17:52,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:17:52,929 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:17:52,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52 WrapperNode [2021-02-23 16:17:52,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:17:52,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:17:52,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:17:52,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:17:52,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:52,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:52,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:52,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:53,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:53,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:53,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... [2021-02-23 16:17:53,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:17:53,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:17:53,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:17:53,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:17:53,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:17:53,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:17:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:17:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:17:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:17:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:17:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:17:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:17:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:17:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:17:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:17:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:17:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:17:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:17:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:17:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:17:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:17:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:17:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:17:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:17:53,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:17:53,207 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:17:53,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:17:53,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:17:53,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:17:53,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:17:53,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:17:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:17:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:17:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:17:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:17:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:17:53,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:17:53,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:17:53,210 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:17:53,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:17:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:17:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:17:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:17:53,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:17:53,211 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:17:53,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:17:53,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:17:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:17:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:17:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:17:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:17:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:17:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:17:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:17:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:17:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:17:54,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:17:54,376 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:17:54,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:17:54 BoogieIcfgContainer [2021-02-23 16:17:54,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:17:54,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:17:54,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:17:54,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:17:54,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:17:52" (1/3) ... [2021-02-23 16:17:54,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e07493a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:17:54, skipping insertion in model container [2021-02-23 16:17:54,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:17:52" (2/3) ... [2021-02-23 16:17:54,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e07493a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:17:54, skipping insertion in model container [2021-02-23 16:17:54,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:17:54" (3/3) ... [2021-02-23 16:17:54,388 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2021-02-23 16:17:54,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:17:54,401 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:17:54,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:17:54,444 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:17:54,445 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:17:54,445 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:17:54,445 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:17:54,445 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:17:54,445 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:17:54,445 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:17:54,446 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:17:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2021-02-23 16:17:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-23 16:17:54,488 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:54,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:54,490 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash -170070573, now seen corresponding path program 1 times [2021-02-23 16:17:54,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:54,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50225049] [2021-02-23 16:17:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:54,582 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,364 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:17:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:17:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:55,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:55,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:55,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50225049] [2021-02-23 16:17:55,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:55,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:17:55,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325941431] [2021-02-23 16:17:55,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:17:55,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:17:55,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:17:55,603 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 4 states. [2021-02-23 16:17:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:17:57,219 INFO L93 Difference]: Finished difference Result 495 states and 583 transitions. [2021-02-23 16:17:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 16:17:57,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-23 16:17:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:17:57,243 INFO L225 Difference]: With dead ends: 495 [2021-02-23 16:17:57,243 INFO L226 Difference]: Without dead ends: 317 [2021-02-23 16:17:57,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:17:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-23 16:17:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 267. [2021-02-23 16:17:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-23 16:17:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-23 16:17:57,492 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 153 [2021-02-23 16:17:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:17:57,495 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-23 16:17:57,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:17:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-23 16:17:57,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-23 16:17:57,513 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:17:57,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:17:57,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:17:57,514 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:17:57,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:17:57,515 INFO L82 PathProgramCache]: Analyzing trace with hash -899151028, now seen corresponding path program 1 times [2021-02-23 16:17:57,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:17:57,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484047126] [2021-02-23 16:17:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:17:57,524 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:17:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:57,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:57,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:17:57,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:57,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,062 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:17:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:17:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:17:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:17:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:17:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:17:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:17:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:17:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:17:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:17:58,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:17:58,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:17:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:17:58,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484047126] [2021-02-23 16:17:58,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:17:58,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:17:58,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404804573] [2021-02-23 16:17:58,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:17:58,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:17:58,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:17:58,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:17:58,239 INFO L87 Difference]: Start difference. First operand 267 states and 289 transitions. Second operand 5 states. [2021-02-23 16:17:59,042 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:00,181 INFO L93 Difference]: Finished difference Result 414 states and 467 transitions. [2021-02-23 16:18:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:18:00,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-23 16:18:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:00,195 INFO L225 Difference]: With dead ends: 414 [2021-02-23 16:18:00,195 INFO L226 Difference]: Without dead ends: 306 [2021-02-23 16:18:00,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:18:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-23 16:18:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 257. [2021-02-23 16:18:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-02-23 16:18:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 276 transitions. [2021-02-23 16:18:00,347 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 276 transitions. Word has length 154 [2021-02-23 16:18:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:00,355 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 276 transitions. [2021-02-23 16:18:00,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:18:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 276 transitions. [2021-02-23 16:18:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-23 16:18:00,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:00,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:00,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:18:00,364 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash -449562862, now seen corresponding path program 1 times [2021-02-23 16:18:00,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:00,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661291354] [2021-02-23 16:18:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:00,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:00,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:00,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:00,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:00,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:00,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:00,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:00,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:00,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:00,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:00,934 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:00,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:18:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:01,070 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:18:01,073 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:18:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:18:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:18:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:01,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:01,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:01,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661291354] [2021-02-23 16:18:01,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:01,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:18:01,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879551520] [2021-02-23 16:18:01,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:18:01,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:01,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:18:01,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:18:01,213 INFO L87 Difference]: Start difference. First operand 257 states and 276 transitions. Second operand 10 states. [2021-02-23 16:18:01,803 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:02,281 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:02,648 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:18:03,078 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:03,474 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:18:03,874 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:05,018 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:07,216 INFO L93 Difference]: Finished difference Result 676 states and 779 transitions. [2021-02-23 16:18:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:18:07,217 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-23 16:18:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:07,223 INFO L225 Difference]: With dead ends: 676 [2021-02-23 16:18:07,223 INFO L226 Difference]: Without dead ends: 539 [2021-02-23 16:18:07,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:18:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-02-23 16:18:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 450. [2021-02-23 16:18:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2021-02-23 16:18:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 499 transitions. [2021-02-23 16:18:07,440 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 499 transitions. Word has length 163 [2021-02-23 16:18:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:07,441 INFO L480 AbstractCegarLoop]: Abstraction has 450 states and 499 transitions. [2021-02-23 16:18:07,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:18:07,441 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 499 transitions. [2021-02-23 16:18:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:18:07,444 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:07,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:07,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:18:07,445 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:07,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:07,445 INFO L82 PathProgramCache]: Analyzing trace with hash 298088667, now seen corresponding path program 1 times [2021-02-23 16:18:07,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:07,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611828660] [2021-02-23 16:18:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:07,449 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,880 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:18:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:07,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:18:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:18:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:07,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:18:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:07,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:08,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:08,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611828660] [2021-02-23 16:18:08,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:08,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:18:08,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793868554] [2021-02-23 16:18:08,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:18:08,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:18:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:18:08,045 INFO L87 Difference]: Start difference. First operand 450 states and 499 transitions. Second operand 7 states. [2021-02-23 16:18:08,812 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:10,762 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:11,524 INFO L93 Difference]: Finished difference Result 1118 states and 1323 transitions. [2021-02-23 16:18:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:18:11,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2021-02-23 16:18:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:11,531 INFO L225 Difference]: With dead ends: 1118 [2021-02-23 16:18:11,531 INFO L226 Difference]: Without dead ends: 788 [2021-02-23 16:18:11,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:18:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-02-23 16:18:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 660. [2021-02-23 16:18:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2021-02-23 16:18:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 733 transitions. [2021-02-23 16:18:11,815 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 733 transitions. Word has length 171 [2021-02-23 16:18:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:11,816 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 733 transitions. [2021-02-23 16:18:11,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:18:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 733 transitions. [2021-02-23 16:18:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:18:11,818 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:11,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:11,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:18:11,819 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:11,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1436928756, now seen corresponding path program 1 times [2021-02-23 16:18:11,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:11,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723053217] [2021-02-23 16:18:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:11,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:11,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:11,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:11,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:11,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:11,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:11,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:11,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:11,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,186 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:18:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:18:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:12,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:12,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:18:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:12,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:12,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:12,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723053217] [2021-02-23 16:18:12,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:12,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:18:12,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490058331] [2021-02-23 16:18:12,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:18:12,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:12,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:18:12,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:18:12,394 INFO L87 Difference]: Start difference. First operand 660 states and 733 transitions. Second operand 10 states. [2021-02-23 16:18:13,090 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:14,351 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:14,740 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:18:15,144 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:15,546 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:15,920 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:18:16,293 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:16,682 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:17,253 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:19,406 INFO L93 Difference]: Finished difference Result 1783 states and 2092 transitions. [2021-02-23 16:18:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 16:18:19,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:18:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:19,416 INFO L225 Difference]: With dead ends: 1783 [2021-02-23 16:18:19,416 INFO L226 Difference]: Without dead ends: 1243 [2021-02-23 16:18:19,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:18:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-02-23 16:18:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1096. [2021-02-23 16:18:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2021-02-23 16:18:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1222 transitions. [2021-02-23 16:18:19,954 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1222 transitions. Word has length 172 [2021-02-23 16:18:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:19,955 INFO L480 AbstractCegarLoop]: Abstraction has 1096 states and 1222 transitions. [2021-02-23 16:18:19,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:18:19,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1222 transitions. [2021-02-23 16:18:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:18:19,958 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:19,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:19,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:18:19,959 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:19,960 INFO L82 PathProgramCache]: Analyzing trace with hash 13267262, now seen corresponding path program 1 times [2021-02-23 16:18:19,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:19,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155592594] [2021-02-23 16:18:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:19,963 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,325 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:18:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:18:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:18:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:18:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:20,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:20,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:20,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:20,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155592594] [2021-02-23 16:18:20,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:20,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:18:20,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000255326] [2021-02-23 16:18:20,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:18:20,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:20,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:18:20,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:18:20,532 INFO L87 Difference]: Start difference. First operand 1096 states and 1222 transitions. Second operand 11 states. [2021-02-23 16:18:21,174 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:22,736 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:23,124 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:18:23,514 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:23,905 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:18:24,294 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:25,367 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:25,733 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:26,167 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:27,429 INFO L93 Difference]: Finished difference Result 2342 states and 2724 transitions. [2021-02-23 16:18:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:18:27,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2021-02-23 16:18:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:27,439 INFO L225 Difference]: With dead ends: 2342 [2021-02-23 16:18:27,439 INFO L226 Difference]: Without dead ends: 1366 [2021-02-23 16:18:27,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 16:18:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-02-23 16:18:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1090. [2021-02-23 16:18:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2021-02-23 16:18:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1210 transitions. [2021-02-23 16:18:27,982 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1210 transitions. Word has length 177 [2021-02-23 16:18:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:27,983 INFO L480 AbstractCegarLoop]: Abstraction has 1090 states and 1210 transitions. [2021-02-23 16:18:27,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:18:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1210 transitions. [2021-02-23 16:18:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-23 16:18:27,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:27,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:27,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:18:27,989 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:27,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash 443601507, now seen corresponding path program 1 times [2021-02-23 16:18:27,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:27,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500470791] [2021-02-23 16:18:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:27,993 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,347 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:18:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:18:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:28,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:28,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:18:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:28,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:28,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:18:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:18:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:18:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-23 16:18:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-23 16:18:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:28,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:28,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:28,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500470791] [2021-02-23 16:18:28,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:28,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:18:28,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302438308] [2021-02-23 16:18:28,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:18:28,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:28,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:18:28,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:18:28,581 INFO L87 Difference]: Start difference. First operand 1090 states and 1210 transitions. Second operand 11 states. [2021-02-23 16:18:30,147 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:30,553 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:18:30,982 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-23 16:18:31,403 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:31,826 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:32,222 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:33,931 INFO L93 Difference]: Finished difference Result 2488 states and 2975 transitions. [2021-02-23 16:18:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:18:33,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 223 [2021-02-23 16:18:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:33,943 INFO L225 Difference]: With dead ends: 2488 [2021-02-23 16:18:33,943 INFO L226 Difference]: Without dead ends: 1518 [2021-02-23 16:18:33,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:18:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-02-23 16:18:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1122. [2021-02-23 16:18:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2021-02-23 16:18:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1242 transitions. [2021-02-23 16:18:34,460 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1242 transitions. Word has length 223 [2021-02-23 16:18:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:34,463 INFO L480 AbstractCegarLoop]: Abstraction has 1122 states and 1242 transitions. [2021-02-23 16:18:34,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:18:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1242 transitions. [2021-02-23 16:18:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-23 16:18:34,469 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:34,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:34,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:18:34,471 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:34,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1883400899, now seen corresponding path program 1 times [2021-02-23 16:18:34,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:34,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830217433] [2021-02-23 16:18:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:34,476 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:34,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:34,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,880 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:34,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:34,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:18:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:34,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:34,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:18:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:34,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:18:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:35,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:35,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:18:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:35,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:18:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:18:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-23 16:18:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-23 16:18:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:35,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:35,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:35,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830217433] [2021-02-23 16:18:35,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:35,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:18:35,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136422889] [2021-02-23 16:18:35,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:18:35,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:35,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:18:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:18:35,175 INFO L87 Difference]: Start difference. First operand 1122 states and 1242 transitions. Second operand 14 states. [2021-02-23 16:18:35,926 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:18:36,335 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:18:36,730 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:37,163 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:37,597 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:38,713 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:39,086 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:39,488 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:39,916 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:40,280 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:18:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:42,359 INFO L93 Difference]: Finished difference Result 2556 states and 3047 transitions. [2021-02-23 16:18:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:18:42,360 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 223 [2021-02-23 16:18:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:42,370 INFO L225 Difference]: With dead ends: 2556 [2021-02-23 16:18:42,370 INFO L226 Difference]: Without dead ends: 1554 [2021-02-23 16:18:42,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:18:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-02-23 16:18:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1146. [2021-02-23 16:18:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2021-02-23 16:18:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1266 transitions. [2021-02-23 16:18:42,865 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1266 transitions. Word has length 223 [2021-02-23 16:18:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:42,866 INFO L480 AbstractCegarLoop]: Abstraction has 1146 states and 1266 transitions. [2021-02-23 16:18:42,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:18:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1266 transitions. [2021-02-23 16:18:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-23 16:18:42,872 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:42,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:42,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:18:42,872 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:42,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:42,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1262929152, now seen corresponding path program 1 times [2021-02-23 16:18:42,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:42,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347310892] [2021-02-23 16:18:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:42,877 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:42,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:42,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:42,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:42,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:42,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:42,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:42,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:42,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:42,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:42,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:18:42,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:42,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,266 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:43,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:18:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:18:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:18:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:43,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:18:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:18:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:18:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:18:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-23 16:18:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-23 16:18:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:43,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:43,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:43,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347310892] [2021-02-23 16:18:43,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:43,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:18:43,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155742124] [2021-02-23 16:18:43,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:18:43,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:18:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:18:43,494 INFO L87 Difference]: Start difference. First operand 1146 states and 1266 transitions. Second operand 8 states. [2021-02-23 16:18:44,144 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:44,905 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:18:48,537 INFO L93 Difference]: Finished difference Result 3764 states and 4573 transitions. [2021-02-23 16:18:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 16:18:48,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2021-02-23 16:18:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:18:48,554 INFO L225 Difference]: With dead ends: 3764 [2021-02-23 16:18:48,555 INFO L226 Difference]: Without dead ends: 2738 [2021-02-23 16:18:48,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:18:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-02-23 16:18:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2188. [2021-02-23 16:18:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2021-02-23 16:18:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2472 transitions. [2021-02-23 16:18:49,447 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2472 transitions. Word has length 223 [2021-02-23 16:18:49,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:18:49,448 INFO L480 AbstractCegarLoop]: Abstraction has 2188 states and 2472 transitions. [2021-02-23 16:18:49,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:18:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2472 transitions. [2021-02-23 16:18:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-02-23 16:18:49,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:18:49,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:18:49,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:18:49,453 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:18:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:18:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2122441274, now seen corresponding path program 1 times [2021-02-23 16:18:49,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:18:49,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131815044] [2021-02-23 16:18:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:18:49,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:18:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:49,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:49,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:18:49,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,860 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:18:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:18:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:18:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:18:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:18:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:49,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:18:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:18:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:18:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:18:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:49,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:49,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:49,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:18:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:18:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:18:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:18:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:18:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,045 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 16:18:50,046 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 16:18:50,074 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-23 16:18:50,075 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-23 16:18:50,104 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 16:18:50,105 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 16:18:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:50,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:50,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 16:18:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:50,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:18:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 16:18:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-23 16:18:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-02-23 16:18:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:18:50,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:18:50,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:18:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:18:50,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131815044] [2021-02-23 16:18:50,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:18:50,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 16:18:50,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986445866] [2021-02-23 16:18:50,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 16:18:50,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:18:50,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 16:18:50,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:18:50,330 INFO L87 Difference]: Start difference. First operand 2188 states and 2472 transitions. Second operand 21 states. [2021-02-23 16:18:51,028 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:51,585 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:18:51,968 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-23 16:18:52,334 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:52,728 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:18:53,106 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:54,261 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:18:55,331 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:55,798 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:18:56,376 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:56,850 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:18:58,605 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:59,100 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:18:59,513 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:18:59,985 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:19:00,434 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:19:00,976 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:19:01,397 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:19:01,850 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-23 16:19:02,663 WARN L202 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-23 16:19:03,504 WARN L202 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 211 [2021-02-23 16:19:04,235 WARN L202 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-23 16:19:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:19:06,324 INFO L93 Difference]: Finished difference Result 4713 states and 5527 transitions. [2021-02-23 16:19:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-23 16:19:06,325 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 228 [2021-02-23 16:19:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:19:06,341 INFO L225 Difference]: With dead ends: 4713 [2021-02-23 16:19:06,341 INFO L226 Difference]: Without dead ends: 2645 [2021-02-23 16:19:06,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=793, Invalid=3367, Unknown=0, NotChecked=0, Total=4160 [2021-02-23 16:19:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-02-23 16:19:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2114. [2021-02-23 16:19:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2021-02-23 16:19:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2358 transitions. [2021-02-23 16:19:07,479 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2358 transitions. Word has length 228 [2021-02-23 16:19:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:19:07,480 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 2358 transitions. [2021-02-23 16:19:07,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 16:19:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2358 transitions. [2021-02-23 16:19:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-02-23 16:19:07,487 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:07,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:19:07,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:19:07,488 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:07,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1349340841, now seen corresponding path program 1 times [2021-02-23 16:19:07,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:07,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933176569] [2021-02-23 16:19:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:07,869 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-23 16:19:07,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:07,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-23 16:19:08,137 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-23 16:19:08,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:08,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-02-23 16:19:08,463 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-23 16:19:08,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:08,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-02-23 16:19:08,745 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-23 16:19:08,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:08,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-02-23 16:19:09,013 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-23 16:19:09,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:09,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-23 16:19:09,260 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-23 16:19:09,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:09,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-02-23 16:19:09,533 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-23 16:19:09,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:09,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-23 16:19:09,814 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-23 16:19:09,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:09,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-02-23 16:19:09,823 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 16:19:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:19:10,177 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:19:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:19:10,483 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:19:10,711 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:19:10,711 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:19:10,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 16:19:10,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:19:10 BoogieIcfgContainer [2021-02-23 16:19:10,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:19:10,745 INFO L168 Benchmark]: Toolchain (without parser) took 78457.90 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 878.7 MB). Free memory was 126.0 MB in the beginning and 604.3 MB in the end (delta: -478.2 MB). Peak memory consumption was 401.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:19:10,746 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:19:10,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:19:10,746 INFO L168 Benchmark]: Boogie Preprocessor took 153.31 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 132.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:19:10,746 INFO L168 Benchmark]: RCFGBuilder took 1294.59 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 88.6 MB in the end (delta: 43.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:19:10,746 INFO L168 Benchmark]: TraceAbstraction took 76363.51 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 878.7 MB). Free memory was 88.1 MB in the beginning and 604.3 MB in the end (delta: -516.2 MB). Peak memory consumption was 362.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:19:10,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 623.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 153.31 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 132.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1294.59 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 88.6 MB in the end (delta: 43.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76363.51 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 878.7 MB). Free memory was 88.1 MB in the beginning and 604.3 MB in the end (delta: -516.2 MB). Peak memory consumption was 362.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 948]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L509] int cleanupTimeShifts = 4; [L650] int methAndRunningLastTime ; [L759] int pumpRunning = 0; [L760] int systemActive = 1; [L590] int retValue_acc ; [L591] int tmp ; [L595] FCALL select_helpers() [L596] FCALL select_features() [L597] CALL, EXPR valid_product() [L639] int retValue_acc ; [L642] retValue_acc = 1 [L643] return (retValue_acc); [L597] RET, EXPR valid_product() [L597] tmp = valid_product() [L599] COND TRUE \read(tmp) [L601] FCALL setup() [L602] CALL runTest() [L580] CALL __utac_acc__Specification2_spec__1() [L655] methAndRunningLastTime = 0 [L580] RET __utac_acc__Specification2_spec__1() [L581] CALL test() [L691] int splverifierCounter ; [L692] int tmp ; [L693] int tmp___0 ; [L694] int tmp___1 ; [L695] int tmp___2 ; [L698] splverifierCounter = 0 [L700] COND TRUE 1 [L702] COND TRUE splverifierCounter < 4 [L708] tmp = __VERIFIER_nondet_int() [L710] COND TRUE \read(tmp) [L712] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L712] RET waterRise() [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND FALSE !(\read(tmp___0)) [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) [L745] CALL timeShift() [L766] COND FALSE !(\read(pumpRunning)) [L773] COND TRUE \read(systemActive) [L775] CALL processEnvironment() [L795] int tmp ; [L798] COND TRUE ! pumpRunning [L800] CALL, EXPR isHighWaterLevel() [L910] int retValue_acc ; [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L916] RET, EXPR isHighWaterSensorDry() [L916] tmp = isHighWaterSensorDry() [L918] COND FALSE !(\read(tmp)) [L921] tmp___0 = 1 [L923] retValue_acc = tmp___0 [L924] return (retValue_acc); [L800] RET, EXPR isHighWaterLevel() [L800] tmp = isHighWaterLevel() [L802] COND TRUE \read(tmp) [L804] CALL activatePump() [L829] int tmp ; [L833] CALL, EXPR isMethaneAlarm() [L854] int retValue_acc ; [L858] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] retValue_acc = isMethaneLevelCritical() [L860] return (retValue_acc); [L833] RET, EXPR isMethaneAlarm() [L833] tmp = isMethaneAlarm() [L835] COND FALSE !(\read(tmp)) [L839] CALL activatePump__wrappee__highWaterSensor() [L823] pumpRunning = 1 [L839] RET activatePump__wrappee__highWaterSensor() [L804] RET activatePump() [L775] RET processEnvironment() [L781] CALL __utac_acc__Specification2_spec__2() [L660] int tmp ; [L661] int tmp___0 ; [L665] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L683] methAndRunningLastTime = 0 [L781] RET __utac_acc__Specification2_spec__2() [L745] RET timeShift() [L700] COND TRUE 1 [L702] COND TRUE splverifierCounter < 4 [L708] tmp = __VERIFIER_nondet_int() [L710] COND FALSE !(\read(tmp)) [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND TRUE \read(tmp___0) [L722] CALL changeMethaneLevel() [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 [L722] RET changeMethaneLevel() [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) [L745] CALL timeShift() [L766] COND TRUE \read(pumpRunning) [L768] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L768] RET lowerWaterLevel() [L773] COND TRUE \read(systemActive) [L775] CALL processEnvironment() [L795] int tmp ; [L798] COND FALSE !(! pumpRunning) [L813] FCALL processEnvironment__wrappee__base() [L775] RET processEnvironment() [L781] CALL __utac_acc__Specification2_spec__2() [L660] int tmp ; [L661] int tmp___0 ; [L665] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND TRUE \read(tmp) [L669] CALL, EXPR isPumpRunning() [L865] int retValue_acc ; [L868] retValue_acc = pumpRunning [L869] return (retValue_acc); [L669] RET, EXPR isPumpRunning() [L669] tmp___0 = isPumpRunning() [L671] COND TRUE \read(tmp___0) [L672] COND TRUE \read(methAndRunningLastTime) [L674] CALL __automaton_fail() [L948] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 639 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 60.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2603 SDtfs, 8261 SDslu, 6294 SDs, 0 SdLazy, 13097 SolverSat, 2601 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 291 SyntacticMatches, 4 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2188occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 2624 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...