/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-b7b32d2 [2021-02-21 18:52:48,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:52:48,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:52:48,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:52:48,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:52:48,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:52:48,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:52:48,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:52:48,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:52:48,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:52:48,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:52:48,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:52:48,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:52:48,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:52:48,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:52:48,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:52:48,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:52:48,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:52:48,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:52:48,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:52:48,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:52:48,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:52:48,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:52:48,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:52:48,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:52:48,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:52:48,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:52:48,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:52:48,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:52:48,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:52:48,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:52:48,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:52:48,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:52:48,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:52:48,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:52:48,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:52:48,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:52:48,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:52:48,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:52:48,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:52:48,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:52:48,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:52:48,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:52:48,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:52:48,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:52:48,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:52:48,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:52:48,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:52:48,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:52:48,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:52:48,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:52:48,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:52:48,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:52:48,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:52:48,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:52:48,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:52:48,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:52:48,794 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:52:48,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:52:48,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:52:48,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:52:48,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:52:48,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:52:48,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:52:48,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:52:49,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:52:49,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:52:49,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:52:49,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:52:49,293 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:52:49,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2021-02-21 18:52:49,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd3d6a20/6f053772ef2649208137bb6111372ffa/FLAGc656395c0 [2021-02-21 18:52:50,148 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:52:50,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2021-02-21 18:52:50,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd3d6a20/6f053772ef2649208137bb6111372ffa/FLAGc656395c0 [2021-02-21 18:52:50,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd3d6a20/6f053772ef2649208137bb6111372ffa [2021-02-21 18:52:50,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:52:50,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:52:50,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:52:50,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:52:50,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:52:50,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:50,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c54e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50, skipping insertion in model container [2021-02-21 18:52:50,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:50,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:52:50,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:52:50,605 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] [2021-02-21 18:52:50,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:52:50,803 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:52:50,821 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] [2021-02-21 18:52:50,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:52:50,955 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:52:50,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50 WrapperNode [2021-02-21 18:52:50,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:52:50,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:52:50,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:52:50,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:52:50,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:50,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:51,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:51,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:51,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:51,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:51,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (1/1) ... [2021-02-21 18:52:51,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:52:51,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:52:51,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:52:51,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:52:51,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (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 [2021-02-21 18:52:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:52:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:52:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:52:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:52:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:52:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:52:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:52:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:52:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:52:51,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:52:51,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:52:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:52:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:52:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:52:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:52:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:52:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:52:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:52:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:52:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:52:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:52:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:52:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:52:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:52:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:52:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:52:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:52:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:52:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:52:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:52:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:52:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:52:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:52:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:52:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:52:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:52:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:52:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:52:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:52:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:52:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:52:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:52:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:52:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:52:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:52:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:52:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:52:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:52:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:52:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:52:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:52:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:52:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:52:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:52:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:52:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:52:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:52:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:52:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:52:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:52:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:52:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:52:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:52:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:52:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:52:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:52:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:52:52,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:52:52,884 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:52:52,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:52:52 BoogieIcfgContainer [2021-02-21 18:52:52,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:52:52,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:52:52,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:52:52,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:52:52,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:52:50" (1/3) ... [2021-02-21 18:52:52,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5eaccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:52:52, skipping insertion in model container [2021-02-21 18:52:52,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:52:50" (2/3) ... [2021-02-21 18:52:52,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5eaccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:52:52, skipping insertion in model container [2021-02-21 18:52:52,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:52:52" (3/3) ... [2021-02-21 18:52:52,896 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2021-02-21 18:52:52,904 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:52:52,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:52:52,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:52:52,952 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:52:52,952 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:52:52,952 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:52:52,952 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:52:52,953 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:52:52,953 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:52:52,953 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:52:52,953 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:52:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2021-02-21 18:52:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-21 18:52:53,000 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:53,001 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] [2021-02-21 18:52:53,002 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:53,008 INFO L82 PathProgramCache]: Analyzing trace with hash -26938766, now seen corresponding path program 1 times [2021-02-21 18:52:53,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:53,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519817501] [2021-02-21 18:52:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:53,099 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:53,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:53,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:53,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:53,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:53,894 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:53,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:53,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:52:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:52:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:54,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:54,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:52:54,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519817501] [2021-02-21 18:52:54,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:54,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:52:54,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751289674] [2021-02-21 18:52:54,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:52:54,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:54,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:52:54,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:52:54,159 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2021-02-21 18:52:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:56,177 INFO L93 Difference]: Finished difference Result 550 states and 650 transitions. [2021-02-21 18:52:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 18:52:56,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-21 18:52:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:56,210 INFO L225 Difference]: With dead ends: 550 [2021-02-21 18:52:56,211 INFO L226 Difference]: Without dead ends: 344 [2021-02-21 18:52:56,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:52:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-02-21 18:52:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 295. [2021-02-21 18:52:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-02-21 18:52:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 323 transitions. [2021-02-21 18:52:56,446 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 323 transitions. Word has length 153 [2021-02-21 18:52:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:56,447 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 323 transitions. [2021-02-21 18:52:56,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:52:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 323 transitions. [2021-02-21 18:52:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-21 18:52:56,453 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:56,453 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] [2021-02-21 18:52:56,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:52:56,454 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:56,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1909398914, now seen corresponding path program 1 times [2021-02-21 18:52:56,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:56,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837231610] [2021-02-21 18:52:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:56,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:56,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:56,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:56,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:56,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:56,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:56,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:56,990 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:52:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:52:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:57,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:57,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:52:57,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837231610] [2021-02-21 18:52:57,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:57,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 18:52:57,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011592982] [2021-02-21 18:52:57,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 18:52:57,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:57,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 18:52:57,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:52:57,126 INFO L87 Difference]: Start difference. First operand 295 states and 323 transitions. Second operand 5 states. [2021-02-21 18:52:57,924 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:59,300 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2021-02-21 18:52:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 18:52:59,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-21 18:52:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:59,304 INFO L225 Difference]: With dead ends: 478 [2021-02-21 18:52:59,305 INFO L226 Difference]: Without dead ends: 333 [2021-02-21 18:52:59,307 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 [2021-02-21 18:52:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-02-21 18:52:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 285. [2021-02-21 18:52:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-02-21 18:52:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 310 transitions. [2021-02-21 18:52:59,439 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 310 transitions. Word has length 154 [2021-02-21 18:52:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:59,440 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 310 transitions. [2021-02-21 18:52:59,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 18:52:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 310 transitions. [2021-02-21 18:52:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-21 18:52:59,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:59,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:52:59,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:52:59,444 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:59,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1550216179, now seen corresponding path program 1 times [2021-02-21 18:52:59,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:59,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598469282] [2021-02-21 18:52:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:59,449 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:59,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:59,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:59,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:59,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:59,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:59,880 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:59,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:59,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:52:59,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:59,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:59,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:59,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:59,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:59,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:59,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:00,005 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:53:00,007 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:53:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:00,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:00,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:00,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:00,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:53:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:00,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:00,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:53:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:00,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:00,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:00,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598469282] [2021-02-21 18:53:00,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:00,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:53:00,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950494220] [2021-02-21 18:53:00,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:53:00,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:53:00,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:53:00,175 INFO L87 Difference]: Start difference. First operand 285 states and 310 transitions. Second operand 10 states. [2021-02-21 18:53:00,897 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:01,407 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:01,844 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:02,271 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:02,632 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:03,013 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:05,072 INFO L93 Difference]: Finished difference Result 498 states and 570 transitions. [2021-02-21 18:53:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:53:05,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-21 18:53:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:05,083 INFO L225 Difference]: With dead ends: 498 [2021-02-21 18:53:05,083 INFO L226 Difference]: Without dead ends: 333 [2021-02-21 18:53:05,086 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 [2021-02-21 18:53:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-02-21 18:53:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 285. [2021-02-21 18:53:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-02-21 18:53:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 309 transitions. [2021-02-21 18:53:05,239 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 309 transitions. Word has length 163 [2021-02-21 18:53:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:05,240 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 309 transitions. [2021-02-21 18:53:05,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:53:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 309 transitions. [2021-02-21 18:53:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:53:05,244 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:05,244 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] [2021-02-21 18:53:05,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:53:05,245 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:05,246 INFO L82 PathProgramCache]: Analyzing trace with hash 563763883, now seen corresponding path program 1 times [2021-02-21 18:53:05,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:05,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93454261] [2021-02-21 18:53:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:05,251 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,698 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:05,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:53:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:05,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:53:05,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:53:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-21 18:53:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:05,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:05,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:05,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93454261] [2021-02-21 18:53:05,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:05,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:53:05,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468381656] [2021-02-21 18:53:05,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:53:05,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:05,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:53:05,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:53:05,917 INFO L87 Difference]: Start difference. First operand 285 states and 309 transitions. Second operand 7 states. [2021-02-21 18:53:06,523 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:08,326 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:09,414 INFO L93 Difference]: Finished difference Result 643 states and 744 transitions. [2021-02-21 18:53:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:53:09,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2021-02-21 18:53:09,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:09,422 INFO L225 Difference]: With dead ends: 643 [2021-02-21 18:53:09,422 INFO L226 Difference]: Without dead ends: 478 [2021-02-21 18:53:09,424 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 [2021-02-21 18:53:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-02-21 18:53:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 407. [2021-02-21 18:53:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2021-02-21 18:53:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 440 transitions. [2021-02-21 18:53:09,629 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 440 transitions. Word has length 181 [2021-02-21 18:53:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:09,630 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 440 transitions. [2021-02-21 18:53:09,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:53:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 440 transitions. [2021-02-21 18:53:09,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:53:09,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:09,634 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] [2021-02-21 18:53:09,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:53:09,634 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1503167017, now seen corresponding path program 1 times [2021-02-21 18:53:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:09,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007605750] [2021-02-21 18:53:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:09,640 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:09,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:09,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:09,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:09,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:09,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:09,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:09,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:09,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:09,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:09,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:53:09,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:09,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,073 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:53:10,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:53:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:10,248 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:53:10,249 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:53:10,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:10,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:53:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-21 18:53:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:10,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:10,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:10,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007605750] [2021-02-21 18:53:10,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:10,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:53:10,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562803613] [2021-02-21 18:53:10,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:53:10,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:53:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:53:10,379 INFO L87 Difference]: Start difference. First operand 407 states and 440 transitions. Second operand 10 states. [2021-02-21 18:53:11,011 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:12,262 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:12,625 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:13,032 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:13,412 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:13,857 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-21 18:53:14,253 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:16,698 INFO L93 Difference]: Finished difference Result 983 states and 1157 transitions. [2021-02-21 18:53:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-21 18:53:16,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-21 18:53:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:16,707 INFO L225 Difference]: With dead ends: 983 [2021-02-21 18:53:16,707 INFO L226 Difference]: Without dead ends: 696 [2021-02-21 18:53:16,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:53:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-02-21 18:53:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 593. [2021-02-21 18:53:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2021-02-21 18:53:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 652 transitions. [2021-02-21 18:53:16,996 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 652 transitions. Word has length 205 [2021-02-21 18:53:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:16,997 INFO L480 AbstractCegarLoop]: Abstraction has 593 states and 652 transitions. [2021-02-21 18:53:16,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:53:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 652 transitions. [2021-02-21 18:53:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:53:17,002 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:17,002 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] [2021-02-21 18:53:17,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:53:17,003 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1433648908, now seen corresponding path program 1 times [2021-02-21 18:53:17,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:17,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858588603] [2021-02-21 18:53:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:17,007 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,495 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:53:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:53:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-21 18:53:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:17,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:17,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:17,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858588603] [2021-02-21 18:53:17,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:17,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:53:17,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728962820] [2021-02-21 18:53:17,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:53:17,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:17,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:53:17,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:53:17,789 INFO L87 Difference]: Start difference. First operand 593 states and 652 transitions. Second operand 10 states. [2021-02-21 18:53:18,449 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:20,461 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:20,912 WARN L202 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:21,316 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:21,724 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:22,080 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:22,508 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:22,886 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:23,392 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:25,443 INFO L93 Difference]: Finished difference Result 1616 states and 1889 transitions. [2021-02-21 18:53:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:53:25,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2021-02-21 18:53:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:25,451 INFO L225 Difference]: With dead ends: 1616 [2021-02-21 18:53:25,452 INFO L226 Difference]: Without dead ends: 1143 [2021-02-21 18:53:25,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-21 18:53:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-02-21 18:53:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 990. [2021-02-21 18:53:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2021-02-21 18:53:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1094 transitions. [2021-02-21 18:53:25,957 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1094 transitions. Word has length 205 [2021-02-21 18:53:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:25,957 INFO L480 AbstractCegarLoop]: Abstraction has 990 states and 1094 transitions. [2021-02-21 18:53:25,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:53:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1094 transitions. [2021-02-21 18:53:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 18:53:25,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:25,969 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] [2021-02-21 18:53:25,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:53:25,969 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash 685060405, now seen corresponding path program 1 times [2021-02-21 18:53:25,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:25,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269986134] [2021-02-21 18:53:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:25,973 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,421 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:53:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:53:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-21 18:53:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:26,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:26,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269986134] [2021-02-21 18:53:26,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:26,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:26,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931939090] [2021-02-21 18:53:26,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:26,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:26,650 INFO L87 Difference]: Start difference. First operand 990 states and 1094 transitions. Second operand 11 states. [2021-02-21 18:53:27,312 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:29,268 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:29,621 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:29,990 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:30,377 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:30,830 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:31,244 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:31,592 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:31,974 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:34,001 INFO L93 Difference]: Finished difference Result 2135 states and 2475 transitions. [2021-02-21 18:53:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 18:53:34,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2021-02-21 18:53:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:34,014 INFO L225 Difference]: With dead ends: 2135 [2021-02-21 18:53:34,014 INFO L226 Difference]: Without dead ends: 1265 [2021-02-21 18:53:34,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-02-21 18:53:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-02-21 18:53:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 986. [2021-02-21 18:53:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2021-02-21 18:53:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1086 transitions. [2021-02-21 18:53:34,539 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1086 transitions. Word has length 210 [2021-02-21 18:53:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:34,539 INFO L480 AbstractCegarLoop]: Abstraction has 986 states and 1086 transitions. [2021-02-21 18:53:34,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:53:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1086 transitions. [2021-02-21 18:53:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-21 18:53:34,544 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:34,544 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] [2021-02-21 18:53:34,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:53:34,545 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash -764599260, now seen corresponding path program 1 times [2021-02-21 18:53:34,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:34,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219426953] [2021-02-21 18:53:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:34,548 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,934 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:34,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:34,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:53:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:35,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:35,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:35,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:35,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:53:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 18:53:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:35,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:35,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:35,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219426953] [2021-02-21 18:53:35,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:35,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:35,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723594758] [2021-02-21 18:53:35,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:35,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:35,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:35,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:35,173 INFO L87 Difference]: Start difference. First operand 986 states and 1086 transitions. Second operand 11 states. [2021-02-21 18:53:36,638 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:37,025 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:37,430 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-21 18:53:37,811 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:38,201 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:38,570 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:40,578 INFO L93 Difference]: Finished difference Result 2153 states and 2510 transitions. [2021-02-21 18:53:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:53:40,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 211 [2021-02-21 18:53:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:40,588 INFO L225 Difference]: With dead ends: 2153 [2021-02-21 18:53:40,589 INFO L226 Difference]: Without dead ends: 1287 [2021-02-21 18:53:40,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:53:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-02-21 18:53:40,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1018. [2021-02-21 18:53:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2021-02-21 18:53:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1118 transitions. [2021-02-21 18:53:41,003 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1118 transitions. Word has length 211 [2021-02-21 18:53:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:41,003 INFO L480 AbstractCegarLoop]: Abstraction has 1018 states and 1118 transitions. [2021-02-21 18:53:41,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:53:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1118 transitions. [2021-02-21 18:53:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-21 18:53:41,008 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:41,008 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] [2021-02-21 18:53:41,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:53:41,008 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:41,009 INFO L82 PathProgramCache]: Analyzing trace with hash -826927996, now seen corresponding path program 1 times [2021-02-21 18:53:41,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:41,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704981016] [2021-02-21 18:53:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:41,012 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:41,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:41,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,403 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:41,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:53:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:41,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:41,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:41,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:53:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 18:53:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:41,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:41,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:41,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704981016] [2021-02-21 18:53:41,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:41,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 18:53:41,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778867033] [2021-02-21 18:53:41,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 18:53:41,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:41,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 18:53:41,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:53:41,674 INFO L87 Difference]: Start difference. First operand 1018 states and 1118 transitions. Second operand 14 states. [2021-02-21 18:53:42,456 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:42,850 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:43,247 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:43,614 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:43,967 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:45,013 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:45,373 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:45,747 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:46,132 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:46,497 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:48,621 INFO L93 Difference]: Finished difference Result 1956 states and 2268 transitions. [2021-02-21 18:53:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:53:48,622 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 211 [2021-02-21 18:53:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:48,628 INFO L225 Difference]: With dead ends: 1956 [2021-02-21 18:53:48,628 INFO L226 Difference]: Without dead ends: 1058 [2021-02-21 18:53:48,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:53:48,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-02-21 18:53:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 865. [2021-02-21 18:53:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2021-02-21 18:53:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 932 transitions. [2021-02-21 18:53:49,031 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 932 transitions. Word has length 211 [2021-02-21 18:53:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:49,031 INFO L480 AbstractCegarLoop]: Abstraction has 865 states and 932 transitions. [2021-02-21 18:53:49,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 18:53:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 932 transitions. [2021-02-21 18:53:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-21 18:53:49,034 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:49,034 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] [2021-02-21 18:53:49,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:53:49,035 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:49,035 INFO L82 PathProgramCache]: Analyzing trace with hash -358913977, now seen corresponding path program 1 times [2021-02-21 18:53:49,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:49,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768509155] [2021-02-21 18:53:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:49,038 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:49,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:49,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:49,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:49,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,417 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:53:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:53:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:53:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-21 18:53:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-02-21 18:53:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:49,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:49,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:53:49,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768509155] [2021-02-21 18:53:49,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:49,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:53:49,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221100309] [2021-02-21 18:53:49,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:53:49,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:53:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:53:49,595 INFO L87 Difference]: Start difference. First operand 865 states and 932 transitions. Second operand 8 states. [2021-02-21 18:53:50,268 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:53,841 INFO L93 Difference]: Finished difference Result 1606 states and 1839 transitions. [2021-02-21 18:53:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 18:53:53,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2021-02-21 18:53:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:53,851 INFO L225 Difference]: With dead ends: 1606 [2021-02-21 18:53:53,851 INFO L226 Difference]: Without dead ends: 1603 [2021-02-21 18:53:53,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-02-21 18:53:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-02-21 18:53:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1335. [2021-02-21 18:53:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2021-02-21 18:53:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1438 transitions. [2021-02-21 18:53:54,536 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1438 transitions. Word has length 216 [2021-02-21 18:53:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:54,537 INFO L480 AbstractCegarLoop]: Abstraction has 1335 states and 1438 transitions. [2021-02-21 18:53:54,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:53:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1438 transitions. [2021-02-21 18:53:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-02-21 18:53:54,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:54,543 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] [2021-02-21 18:53:54,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:53:54,543 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:54,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1038926475, now seen corresponding path program 1 times [2021-02-21 18:53:54,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:54,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126798070] [2021-02-21 18:53:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:54,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-21 18:53:54,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:54,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:54,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,035 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:53:55,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 18:53:55,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,379 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:55,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 18:53:55,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,778 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:55,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:53:56,080 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:56,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 18:53:56,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,452 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:53:56,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-02-21 18:53:56,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,939 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:56,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:53:56,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,296 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:53:57,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-02-21 18:53:57,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,741 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:53:57,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-02-21 18:53:57,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:57,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:57,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:58,143 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:58,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 18:53:58,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:58,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:58,496 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:58,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:53:58,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:58,838 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:58,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 18:53:58,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:58,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:59,195 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:59,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:53:59,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:59,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:59,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:59,582 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:59,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 18:53:59,931 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:53:59,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:53:59,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:59,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:59,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,293 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:00,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:54:00,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:00,717 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:00,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:00,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 18:54:00,724 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 18:54:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:01,171 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:01,483 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:02,040 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:54:02,040 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:54:02,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 18:54:02,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:54:02 BoogieIcfgContainer [2021-02-21 18:54:02,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:54:02,092 INFO L168 Benchmark]: Toolchain (without parser) took 71710.35 ms. Allocated memory was 151.0 MB in the beginning and 830.5 MB in the end (delta: 679.5 MB). Free memory was 127.1 MB in the beginning and 432.8 MB in the end (delta: -305.7 MB). Peak memory consumption was 374.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:02,093 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:54:02,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 133.5 MB in the end (delta: -7.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:02,093 INFO L168 Benchmark]: Boogie Preprocessor took 164.98 ms. Allocated memory is still 151.0 MB. Free memory was 133.5 MB in the beginning and 129.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:02,093 INFO L168 Benchmark]: RCFGBuilder took 1764.09 ms. Allocated memory is still 151.0 MB. Free memory was 129.2 MB in the beginning and 102.1 MB in the end (delta: 27.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:02,093 INFO L168 Benchmark]: TraceAbstraction took 69202.52 ms. Allocated memory was 151.0 MB in the beginning and 830.5 MB in the end (delta: 679.5 MB). Free memory was 102.1 MB in the beginning and 432.8 MB in the end (delta: -330.7 MB). Peak memory consumption was 348.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:02,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 561.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 133.5 MB in the end (delta: -7.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 164.98 ms. Allocated memory is still 151.0 MB. Free memory was 133.5 MB in the beginning and 129.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1764.09 ms. Allocated memory is still 151.0 MB. Free memory was 129.2 MB in the beginning and 102.1 MB in the end (delta: 27.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 69202.52 ms. Allocated memory was 151.0 MB in the beginning and 830.5 MB in the end (delta: 679.5 MB). Free memory was 102.1 MB in the beginning and 432.8 MB in the end (delta: -330.7 MB). Peak memory consumption was 348.8 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: 69.0s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 50.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2699 SDtfs, 6210 SDslu, 5025 SDs, 0 SdLazy, 10714 SolverSat, 1724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 490 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 23.3s 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: 3.4s 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...