/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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:19:24,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:19:24,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:19:24,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:19:24,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:19:24,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:19:24,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:19:24,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:19:24,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:19:24,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:19:24,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:19:24,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:19:24,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:19:24,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:19:24,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:19:24,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:19:24,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:19:24,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:19:24,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:19:25,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:19:25,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:19:25,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:19:25,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:19:25,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:19:25,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:19:25,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:19:25,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:19:25,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:19:25,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:19:25,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:19:25,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:19:25,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:19:25,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:19:25,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:19:25,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:19:25,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:19:25,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:19:25,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:19:25,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:19:25,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:19:25,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:19:25,050 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 16:19:25,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:19:25,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:19:25,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:19:25,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:19:25,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:19:25,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:19:25,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:19:25,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:19:25,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:19:25,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:19:25,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:19:25,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:19:25,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:19:25,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:19:25,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:19:25,083 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:19:25,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:19:25,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:19:25,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:19:25,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:19:25,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:19:25,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:19:25,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:19:25,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:19:25,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:19:25,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:19:25,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:19:25,539 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:19:25,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2021-02-23 16:19:25,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d88e4be/49a3888f7a2f417ebc340af2ca987926/FLAGa7fa9cc19 [2021-02-23 16:19:26,307 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:19:26,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2021-02-23 16:19:26,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d88e4be/49a3888f7a2f417ebc340af2ca987926/FLAGa7fa9cc19 [2021-02-23 16:19:26,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d88e4be/49a3888f7a2f417ebc340af2ca987926 [2021-02-23 16:19:26,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:19:26,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:19:26,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:19:26,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:19:26,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:19:26,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:19:26" (1/1) ... [2021-02-23 16:19:26,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9af913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:26, skipping insertion in model container [2021-02-23 16:19:26,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:19:26" (1/1) ... [2021-02-23 16:19:26,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:19:26,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:19:26,947 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_product53.cil.c[1281,1294] [2021-02-23 16:19:27,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:19:27,113 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:19:27,139 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_product53.cil.c[1281,1294] [2021-02-23 16:19:27,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:19:27,315 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:19:27,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27 WrapperNode [2021-02-23 16:19:27,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:19:27,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:19:27,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:19:27,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:19:27,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (1/1) ... [2021-02-23 16:19:27,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:19:27,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:19:27,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:19:27,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:19:27,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (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 16:19:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:19:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:19:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:19:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:19:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:19:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:19:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:19:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:19:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:19:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:19:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:19:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:19:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:19:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:19:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:19:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:19:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:19:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:19:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:19:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:19:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:19:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:19:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:19:27,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:19:27,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:19:27,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:19:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:19:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:19:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:19:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:19:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:19:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:19:27,566 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:19:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:19:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:19:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:19:27,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:19:27,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:19:27,567 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:19:27,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:19:27,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:19:27,567 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:19:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:19:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:19:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:19:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:19:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:19:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:19:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:19:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:19:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:19:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-23 16:19:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:19:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:19:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-23 16:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-23 16:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:19:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:19:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:19:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:19:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:19:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:19:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:19:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:19:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:19:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:19:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:19:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:19:28,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:19:28,803 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:19:28,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:19:28 BoogieIcfgContainer [2021-02-23 16:19:28,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:19:28,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:19:28,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:19:28,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:19:28,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:19:26" (1/3) ... [2021-02-23 16:19:28,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42116337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:19:28, skipping insertion in model container [2021-02-23 16:19:28,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:19:27" (2/3) ... [2021-02-23 16:19:28,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42116337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:19:28, skipping insertion in model container [2021-02-23 16:19:28,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:19:28" (3/3) ... [2021-02-23 16:19:28,823 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2021-02-23 16:19:28,831 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:19:28,838 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:19:28,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:19:28,878 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:19:28,878 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:19:28,878 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:19:28,878 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:19:28,879 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:19:28,879 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:19:28,879 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:19:28,879 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:19:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2021-02-23 16:19:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-23 16:19:28,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:28,925 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 16:19:28,925 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash -26938766, now seen corresponding path program 1 times [2021-02-23 16:19:28,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:28,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568094081] [2021-02-23 16:19:28,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:29,013 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:19:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,703 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:19:29,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:19:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:19:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:19:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:19:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:19:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:19:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:19:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:19:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:29,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:29,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:29,983 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 16:19:29,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568094081] [2021-02-23 16:19:29,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:19:29,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:19:29,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113678186] [2021-02-23 16:19:29,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:19:29,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:19:30,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:19:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:19:30,011 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2021-02-23 16:19:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:19:31,797 INFO L93 Difference]: Finished difference Result 550 states and 650 transitions. [2021-02-23 16:19:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 16:19:31,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-23 16:19:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:19:31,817 INFO L225 Difference]: With dead ends: 550 [2021-02-23 16:19:31,817 INFO L226 Difference]: Without dead ends: 344 [2021-02-23 16:19:31,823 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 16:19:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-02-23 16:19:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 295. [2021-02-23 16:19:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-02-23 16:19:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 323 transitions. [2021-02-23 16:19:32,061 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 323 transitions. Word has length 153 [2021-02-23 16:19:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:19:32,063 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 323 transitions. [2021-02-23 16:19:32,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:19:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 323 transitions. [2021-02-23 16:19:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-23 16:19:32,068 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:32,068 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 16:19:32,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:19:32,069 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1909398914, now seen corresponding path program 1 times [2021-02-23 16:19:32,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:32,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958323258] [2021-02-23 16:19:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:32,075 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:19:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:32,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,565 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:19:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:19:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:19:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:19:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:19:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:19:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:19:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:19:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:19:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:32,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:32,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:32,687 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 16:19:32,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958323258] [2021-02-23 16:19:32,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:19:32,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:19:32,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399110956] [2021-02-23 16:19:32,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:19:32,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:19:32,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:19:32,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:19:32,690 INFO L87 Difference]: Start difference. First operand 295 states and 323 transitions. Second operand 5 states. [2021-02-23 16:19:33,479 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:19:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:19:34,884 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2021-02-23 16:19:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:19:34,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-23 16:19:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:19:34,890 INFO L225 Difference]: With dead ends: 478 [2021-02-23 16:19:34,890 INFO L226 Difference]: Without dead ends: 333 [2021-02-23 16:19:34,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:19:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-02-23 16:19:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 285. [2021-02-23 16:19:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-02-23 16:19:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 310 transitions. [2021-02-23 16:19:35,018 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 310 transitions. Word has length 154 [2021-02-23 16:19:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:19:35,019 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 310 transitions. [2021-02-23 16:19:35,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:19:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 310 transitions. [2021-02-23 16:19:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-23 16:19:35,023 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:35,023 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 16:19:35,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:19:35,023 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1550216179, now seen corresponding path program 1 times [2021-02-23 16:19:35,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:35,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308769950] [2021-02-23 16:19:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:35,028 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:19:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:35,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:35,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:35,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:19:35,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,481 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:19:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:19:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:19:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:19:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:19:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:19:35,594 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:19:35,595 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:19:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:19:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:19:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:19:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:19:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:35,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:35,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:35,693 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 16:19:35,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308769950] [2021-02-23 16:19:35,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:19:35,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:19:35,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63612572] [2021-02-23 16:19:35,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:19:35,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:19:35,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:19:35,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:19:35,701 INFO L87 Difference]: Start difference. First operand 285 states and 310 transitions. Second operand 10 states. [2021-02-23 16:19:36,337 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:19:36,820 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:19:37,213 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:19:37,650 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:38,029 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:19:38,400 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:19:40,377 INFO L93 Difference]: Finished difference Result 498 states and 570 transitions. [2021-02-23 16:19:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:19:40,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-23 16:19:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:19:40,383 INFO L225 Difference]: With dead ends: 498 [2021-02-23 16:19:40,383 INFO L226 Difference]: Without dead ends: 333 [2021-02-23 16:19:40,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:19:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-02-23 16:19:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 285. [2021-02-23 16:19:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-02-23 16:19:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 309 transitions. [2021-02-23 16:19:40,515 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 309 transitions. Word has length 163 [2021-02-23 16:19:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:19:40,516 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 309 transitions. [2021-02-23 16:19:40,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:19:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 309 transitions. [2021-02-23 16:19:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:19:40,519 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:40,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:19:40,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:19:40,520 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash 563763883, now seen corresponding path program 1 times [2021-02-23 16:19:40,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:40,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695707931] [2021-02-23 16:19:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:40,524 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:19:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:40,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:40,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:40,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:40,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:40,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:40,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:40,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:40,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:40,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:40,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:40,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:40,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:40,949 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:19:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:19:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:19:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:19:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:19:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:19:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:19:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:19:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:41,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:41,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:41,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:19:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:19:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-23 16:19:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:41,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:41,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:41,173 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 16:19:41,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695707931] [2021-02-23 16:19:41,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:19:41,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:19:41,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124445184] [2021-02-23 16:19:41,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:19:41,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:19:41,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:19:41,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:19:41,179 INFO L87 Difference]: Start difference. First operand 285 states and 309 transitions. Second operand 7 states. [2021-02-23 16:19:41,799 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:19:43,599 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:19:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:19:44,650 INFO L93 Difference]: Finished difference Result 643 states and 744 transitions. [2021-02-23 16:19:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:19:44,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2021-02-23 16:19:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:19:44,656 INFO L225 Difference]: With dead ends: 643 [2021-02-23 16:19:44,656 INFO L226 Difference]: Without dead ends: 478 [2021-02-23 16:19:44,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:19:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-02-23 16:19:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 407. [2021-02-23 16:19:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2021-02-23 16:19:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 440 transitions. [2021-02-23 16:19:44,826 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 440 transitions. Word has length 181 [2021-02-23 16:19:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:19:44,827 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 440 transitions. [2021-02-23 16:19:44,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:19:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 440 transitions. [2021-02-23 16:19:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:19:44,830 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:44,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:44,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:19:44,830 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1503167017, now seen corresponding path program 1 times [2021-02-23 16:19:44,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:44,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606350243] [2021-02-23 16:19:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:44,835 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:19:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:44,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:44,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:44,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:44,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:44,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:44,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:44,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:44,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:44,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:44,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:19:44,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:44,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,296 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:19:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:19:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:19:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:19:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:19:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:19:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:19:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:19:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:19:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:19:45,481 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 16:19:45,482 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 16:19:45,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:19:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:19:45,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:19:45,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:19:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:19:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:19:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:45,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:45,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:45,615 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 16:19:45,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606350243] [2021-02-23 16:19:45,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:19:45,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:19:45,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227005457] [2021-02-23 16:19:45,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:19:45,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:19:45,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:19:45,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:19:45,617 INFO L87 Difference]: Start difference. First operand 407 states and 440 transitions. Second operand 10 states. [2021-02-23 16:19:46,199 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:19:47,506 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:47,900 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:19:48,262 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:19:48,621 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:49,051 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-23 16:19:49,469 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:19:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:19:51,799 INFO L93 Difference]: Finished difference Result 983 states and 1157 transitions. [2021-02-23 16:19:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 16:19:51,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-23 16:19:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:19:51,809 INFO L225 Difference]: With dead ends: 983 [2021-02-23 16:19:51,810 INFO L226 Difference]: Without dead ends: 696 [2021-02-23 16:19:51,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:19:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-02-23 16:19:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 593. [2021-02-23 16:19:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2021-02-23 16:19:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 652 transitions. [2021-02-23 16:19:52,127 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 652 transitions. Word has length 205 [2021-02-23 16:19:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:19:52,128 INFO L480 AbstractCegarLoop]: Abstraction has 593 states and 652 transitions. [2021-02-23 16:19:52,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:19:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 652 transitions. [2021-02-23 16:19:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 16:19:52,132 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:19:52,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:52,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:19:52,132 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:19:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:19:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1433648908, now seen corresponding path program 1 times [2021-02-23 16:19:52,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:19:52,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358257059] [2021-02-23 16:19:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:19:52,136 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:19:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,505 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:19:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:19:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:19:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:19:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:19:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:19:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:19:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:19:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:19:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:19:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:19:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:19:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:19:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:19:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:19:52,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:19:52,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:19:52,716 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 16:19:52,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358257059] [2021-02-23 16:19:52,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:19:52,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:19:52,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208642220] [2021-02-23 16:19:52,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:19:52,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:19:52,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:19:52,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:19:52,719 INFO L87 Difference]: Start difference. First operand 593 states and 652 transitions. Second operand 10 states. [2021-02-23 16:19:53,337 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:19:55,269 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:55,712 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:19:56,143 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:56,532 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:19:56,915 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:19:57,280 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:57,651 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:19:58,169 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:00,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:00,260 INFO L93 Difference]: Finished difference Result 1616 states and 1889 transitions. [2021-02-23 16:20:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 16:20:00,261 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-23 16:20:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:00,268 INFO L225 Difference]: With dead ends: 1616 [2021-02-23 16:20:00,268 INFO L226 Difference]: Without dead ends: 1143 [2021-02-23 16:20:00,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-23 16:20:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-02-23 16:20:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 990. [2021-02-23 16:20:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2021-02-23 16:20:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1094 transitions. [2021-02-23 16:20:00,708 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1094 transitions. Word has length 205 [2021-02-23 16:20:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:00,709 INFO L480 AbstractCegarLoop]: Abstraction has 990 states and 1094 transitions. [2021-02-23 16:20:00,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:20:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1094 transitions. [2021-02-23 16:20:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:20:00,713 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:00,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:00,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:20:00,714 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:00,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:00,715 INFO L82 PathProgramCache]: Analyzing trace with hash 685060405, now seen corresponding path program 1 times [2021-02-23 16:20:00,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:00,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337553223] [2021-02-23 16:20:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:00,718 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:00,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:00,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:00,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,119 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:20:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:20:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:20:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:20:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:20:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:20:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:20:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:20:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:20:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:20:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-23 16:20:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-23 16:20:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:01,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:01,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:01,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:01,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:01,364 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 16:20:01,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337553223] [2021-02-23 16:20:01,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:01,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:20:01,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742360484] [2021-02-23 16:20:01,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:20:01,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:01,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:20:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:20:01,366 INFO L87 Difference]: Start difference. First operand 990 states and 1094 transitions. Second operand 11 states. [2021-02-23 16:20:01,976 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:20:03,837 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:20:04,219 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:20:04,648 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:20:05,095 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:20:05,542 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:20:05,945 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:20:06,348 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:20:06,758 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:08,517 INFO L93 Difference]: Finished difference Result 2135 states and 2475 transitions. [2021-02-23 16:20:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 16:20:08,518 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2021-02-23 16:20:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:08,526 INFO L225 Difference]: With dead ends: 2135 [2021-02-23 16:20:08,527 INFO L226 Difference]: Without dead ends: 1265 [2021-02-23 16:20:08,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-02-23 16:20:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-02-23 16:20:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 986. [2021-02-23 16:20:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2021-02-23 16:20:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1086 transitions. [2021-02-23 16:20:08,944 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1086 transitions. Word has length 210 [2021-02-23 16:20:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:08,944 INFO L480 AbstractCegarLoop]: Abstraction has 986 states and 1086 transitions. [2021-02-23 16:20:08,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:20:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1086 transitions. [2021-02-23 16:20:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-23 16:20:08,951 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:08,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:08,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:20:08,952 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:08,952 INFO L82 PathProgramCache]: Analyzing trace with hash -764599260, now seen corresponding path program 1 times [2021-02-23 16:20:08,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:08,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656803633] [2021-02-23 16:20:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:08,956 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,375 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:20:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:20:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:20:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:20:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:20:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:20:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:20:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:20:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:09,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:09,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:09,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:09,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:20:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:20:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:20:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-23 16:20:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:09,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:09,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:09,588 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 16:20:09,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656803633] [2021-02-23 16:20:09,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:09,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:20:09,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215751750] [2021-02-23 16:20:09,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:20:09,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:09,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:20:09,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:20:09,591 INFO L87 Difference]: Start difference. First operand 986 states and 1086 transitions. Second operand 11 states. [2021-02-23 16:20:11,054 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:20:11,439 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:20:11,847 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-23 16:20:12,223 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:12,581 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:20:12,927 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:14,853 INFO L93 Difference]: Finished difference Result 2153 states and 2510 transitions. [2021-02-23 16:20:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:20:14,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 211 [2021-02-23 16:20:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:14,863 INFO L225 Difference]: With dead ends: 2153 [2021-02-23 16:20:14,863 INFO L226 Difference]: Without dead ends: 1287 [2021-02-23 16:20:14,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:20:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-02-23 16:20:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1018. [2021-02-23 16:20:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2021-02-23 16:20:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1118 transitions. [2021-02-23 16:20:15,326 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1118 transitions. Word has length 211 [2021-02-23 16:20:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:15,327 INFO L480 AbstractCegarLoop]: Abstraction has 1018 states and 1118 transitions. [2021-02-23 16:20:15,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:20:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1118 transitions. [2021-02-23 16:20:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-23 16:20:15,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:15,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:15,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:20:15,330 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash -826927996, now seen corresponding path program 1 times [2021-02-23 16:20:15,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:15,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284893892] [2021-02-23 16:20:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:15,333 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:15,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:15,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,694 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:20:15,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:20:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:20:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:20:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:15,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:20:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:20:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:20:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-23 16:20:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:20:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:15,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:15,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:20:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:15,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:15,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:20:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-23 16:20:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-23 16:20:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:15,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:15,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:20:15,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284893892] [2021-02-23 16:20:15,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:15,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:20:15,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624695517] [2021-02-23 16:20:15,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:20:15,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:20:15,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:20:15,939 INFO L87 Difference]: Start difference. First operand 1018 states and 1118 transitions. Second operand 14 states. [2021-02-23 16:20:16,706 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:20:17,090 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:20:17,465 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:17,834 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:20:18,194 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:19,251 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:19,612 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:20:19,993 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:20,387 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:20:20,768 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:20:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:22,963 INFO L93 Difference]: Finished difference Result 1956 states and 2268 transitions. [2021-02-23 16:20:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:20:22,967 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 211 [2021-02-23 16:20:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:22,974 INFO L225 Difference]: With dead ends: 1956 [2021-02-23 16:20:22,974 INFO L226 Difference]: Without dead ends: 1058 [2021-02-23 16:20:22,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:20:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-02-23 16:20:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 865. [2021-02-23 16:20:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2021-02-23 16:20:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 932 transitions. [2021-02-23 16:20:23,362 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 932 transitions. Word has length 211 [2021-02-23 16:20:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:23,363 INFO L480 AbstractCegarLoop]: Abstraction has 865 states and 932 transitions. [2021-02-23 16:20:23,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:20:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 932 transitions. [2021-02-23 16:20:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-23 16:20:23,365 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:23,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:23,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:20:23,366 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash -358913977, now seen corresponding path program 1 times [2021-02-23 16:20:23,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:23,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058656788] [2021-02-23 16:20:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:23,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:20:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:23,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:23,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:23,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:23,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,751 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:20:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:20:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-23 16:20:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-23 16:20:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 16:20:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-23 16:20:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 16:20:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:20:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:20:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:20:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:20:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:20:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:20:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:20:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-23 16:20:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-02-23 16:20:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:20:23,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:23,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:23,921 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 16:20:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058656788] [2021-02-23 16:20:23,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:20:23,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:20:23,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564266156] [2021-02-23 16:20:23,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:20:23,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:20:23,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:20:23,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:20:23,923 INFO L87 Difference]: Start difference. First operand 865 states and 932 transitions. Second operand 8 states. [2021-02-23 16:20:24,534 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:20:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:20:28,111 INFO L93 Difference]: Finished difference Result 1606 states and 1839 transitions. [2021-02-23 16:20:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 16:20:28,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2021-02-23 16:20:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:20:28,121 INFO L225 Difference]: With dead ends: 1606 [2021-02-23 16:20:28,121 INFO L226 Difference]: Without dead ends: 1603 [2021-02-23 16:20:28,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-02-23 16:20:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-02-23 16:20:28,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1335. [2021-02-23 16:20:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2021-02-23 16:20:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1438 transitions. [2021-02-23 16:20:28,664 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1438 transitions. Word has length 216 [2021-02-23 16:20:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:20:28,665 INFO L480 AbstractCegarLoop]: Abstraction has 1335 states and 1438 transitions. [2021-02-23 16:20:28,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:20:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1438 transitions. [2021-02-23 16:20:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-02-23 16:20:28,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:20:28,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:20:28,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:20:28,671 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:20:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:20:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1038926475, now seen corresponding path program 1 times [2021-02-23 16:20:28,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:20:28,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809549820] [2021-02-23 16:20:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:20:28,747 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-23 16:20:28,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:28,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:29,105 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-23 16:20:29,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-23 16:20:29,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:29,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:29,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:29,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:29,493 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:29,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-23 16:20:29,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:29,833 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:29,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:29,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-23 16:20:30,112 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:30,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-23 16:20:30,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,502 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-23 16:20:30,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-02-23 16:20:30,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:30,965 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:30,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-23 16:20:30,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:30,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,290 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-23 16:20:31,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-02-23 16:20:31,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,743 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-23 16:20:31,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-02-23 16:20:31,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:31,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:31,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:32,143 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:32,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:32,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-23 16:20:32,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:32,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:32,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:32,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:32,503 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:32,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:32,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 16:20:32,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:32,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:32,801 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:32,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:32,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-23 16:20:33,123 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:33,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 16:20:33,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:33,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:33,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:33,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:33,483 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:33,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 16:20:33,818 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:33,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-23 16:20:33,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:33,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,194 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:34,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-23 16:20:34,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,597 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-23 16:20:34,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-23 16:20:34,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:20:34,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:20:34,626 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 16:20:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:20:35,099 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:20:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:20:35,434 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:20:35,862 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:20:35,862 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:20:35,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 16:20:35,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:20:35 BoogieIcfgContainer [2021-02-23 16:20:35,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:20:35,895 INFO L168 Benchmark]: Toolchain (without parser) took 69275.03 ms. Allocated memory was 151.0 MB in the beginning and 823.1 MB in the end (delta: 672.1 MB). Free memory was 126.3 MB in the beginning and 469.4 MB in the end (delta: -343.1 MB). Peak memory consumption was 330.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:35,895 INFO L168 Benchmark]: CDTParser took 0.23 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 16:20:35,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 103.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:35,895 INFO L168 Benchmark]: Boogie Preprocessor took 88.80 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 99.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:35,895 INFO L168 Benchmark]: RCFGBuilder took 1406.29 ms. Allocated memory is still 151.0 MB. Free memory was 99.1 MB in the beginning and 89.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:35,896 INFO L168 Benchmark]: TraceAbstraction took 67079.31 ms. Allocated memory was 151.0 MB in the beginning and 823.1 MB in the end (delta: 672.1 MB). Free memory was 89.0 MB in the beginning and 469.4 MB in the end (delta: -380.5 MB). Peak memory consumption was 291.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:20:35,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 674.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 103.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.80 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 99.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1406.29 ms. Allocated memory is still 151.0 MB. Free memory was 99.1 MB in the beginning and 89.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 67079.31 ms. Allocated memory was 151.0 MB in the beginning and 823.1 MB in the end (delta: 672.1 MB). Free memory was 89.0 MB in the beginning and 469.4 MB in the end (delta: -380.5 MB). Peak memory consumption was 291.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L289] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L495] int pumpRunning = 0; [L496] int systemActive = 1; [L719] int methAndRunningLastTime ; [L758] int cleanupTimeShifts = 4; [L859] int waterLevel = 1; [L860] int methaneLevelCritical = 0; [L835] int retValue_acc ; [L836] int tmp ; [L840] FCALL select_helpers() [L841] FCALL select_features() [L842] CALL, EXPR valid_product() [L988] int retValue_acc ; [L991] retValue_acc = 1 [L992] return (retValue_acc); [L842] RET, EXPR valid_product() [L842] tmp = valid_product() [L844] COND TRUE \read(tmp) [L846] FCALL setup() [L847] CALL runTest() [L825] CALL __utac_acc__Specification2_spec__1() [L724] methAndRunningLastTime = 0 [L825] RET __utac_acc__Specification2_spec__1() [L826] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) [L77] CALL waterRise() [L877] COND TRUE waterLevel < 2 [L878] waterLevel = waterLevel + 1 [L77] RET waterRise() [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___0) [L87] CALL changeMethaneLevel() [L889] COND FALSE !(\read(methaneLevelCritical)) [L892] methaneLevelCritical = 1 [L87] RET changeMethaneLevel() [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L108] CALL timeShift() [L503] COND FALSE !(\read(pumpRunning)) [L510] COND TRUE \read(systemActive) [L512] CALL processEnvironment() [L584] int tmp ; [L587] COND FALSE !(\read(pumpRunning)) [L602] CALL processEnvironment__wrappee__lowWaterSensor() [L558] int tmp ; [L561] COND FALSE !(\read(pumpRunning)) [L576] CALL processEnvironment__wrappee__highWaterSensor() [L532] int tmp ; [L535] COND TRUE ! pumpRunning [L537] CALL, EXPR isHighWaterLevel() [L681] int retValue_acc ; [L682] int tmp ; [L683] int tmp___0 ; [L687] CALL, EXPR isHighWaterSensorDry() [L939] int retValue_acc ; [L942] COND FALSE !(waterLevel < 2) [L946] retValue_acc = 0 [L947] return (retValue_acc); [L687] RET, EXPR isHighWaterSensorDry() [L687] tmp = isHighWaterSensorDry() [L689] COND FALSE !(\read(tmp)) [L692] tmp___0 = 1 [L694] retValue_acc = tmp___0 [L695] return (retValue_acc); [L537] RET, EXPR isHighWaterLevel() [L537] tmp = isHighWaterLevel() [L539] COND TRUE \read(tmp) [L541] CALL activatePump() [L612] pumpRunning = 1 [L541] RET activatePump() [L576] RET processEnvironment__wrappee__highWaterSensor() [L602] RET processEnvironment__wrappee__lowWaterSensor() [L512] RET processEnvironment() [L518] CALL __utac_acc__Specification2_spec__2() [L729] int tmp ; [L730] int tmp___0 ; [L734] CALL, EXPR isMethaneLevelCritical() [L898] int retValue_acc ; [L901] retValue_acc = methaneLevelCritical [L902] return (retValue_acc); [L734] RET, EXPR isMethaneLevelCritical() [L734] tmp = isMethaneLevelCritical() [L736] COND TRUE \read(tmp) [L738] CALL, EXPR isPumpRunning() [L636] int retValue_acc ; [L639] retValue_acc = pumpRunning [L640] return (retValue_acc); [L738] RET, EXPR isPumpRunning() [L738] tmp___0 = isPumpRunning() [L740] COND TRUE \read(tmp___0) [L741] COND FALSE !(\read(methAndRunningLastTime)) [L746] methAndRunningLastTime = 1 [L518] RET __utac_acc__Specification2_spec__2() [L108] RET timeShift() [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L108] CALL timeShift() [L503] COND FALSE !(\read(pumpRunning)) [L510] COND TRUE \read(systemActive) [L512] CALL processEnvironment() [L584] int tmp ; [L587] COND FALSE !(\read(pumpRunning)) [L602] CALL processEnvironment__wrappee__lowWaterSensor() [L558] int tmp ; [L561] COND FALSE !(\read(pumpRunning)) [L576] CALL processEnvironment__wrappee__highWaterSensor() [L532] int tmp ; [L535] COND TRUE ! pumpRunning [L537] CALL, EXPR isHighWaterLevel() [L681] int retValue_acc ; [L682] int tmp ; [L683] int tmp___0 ; [L687] CALL, EXPR isHighWaterSensorDry() [L939] int retValue_acc ; [L942] COND FALSE !(waterLevel < 2) [L946] retValue_acc = 0 [L947] return (retValue_acc); [L687] RET, EXPR isHighWaterSensorDry() [L687] tmp = isHighWaterSensorDry() [L689] COND FALSE !(\read(tmp)) [L692] tmp___0 = 1 [L694] retValue_acc = tmp___0 [L695] return (retValue_acc); [L537] RET, EXPR isHighWaterLevel() [L537] tmp = isHighWaterLevel() [L539] COND TRUE \read(tmp) [L541] CALL activatePump() [L612] pumpRunning = 1 [L541] RET activatePump() [L576] RET processEnvironment__wrappee__highWaterSensor() [L602] RET processEnvironment__wrappee__lowWaterSensor() [L512] RET processEnvironment() [L518] CALL __utac_acc__Specification2_spec__2() [L729] int tmp ; [L730] int tmp___0 ; [L734] CALL, EXPR isMethaneLevelCritical() [L898] int retValue_acc ; [L901] retValue_acc = methaneLevelCritical [L902] return (retValue_acc); [L734] RET, EXPR isMethaneLevelCritical() [L734] tmp = isMethaneLevelCritical() [L736] COND TRUE \read(tmp) [L738] CALL, EXPR isPumpRunning() [L636] int retValue_acc ; [L639] retValue_acc = pumpRunning [L640] return (retValue_acc); [L738] RET, EXPR isPumpRunning() [L738] tmp___0 = isPumpRunning() [L740] COND TRUE \read(tmp___0) [L741] COND TRUE \read(methAndRunningLastTime) [L743] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.9s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 49.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2697 SDtfs, 6210 SDslu, 5017 SDs, 0 SdLazy, 10698 SolverSat, 1724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 490 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1335occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 1481 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...