/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_spec4_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:20:56,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:20:56,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:20:56,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:20:56,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:20:56,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:20:56,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:20:56,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:20:56,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:20:56,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:20:56,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:20:56,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:20:56,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:20:56,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:20:56,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:20:56,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:20:56,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:20:56,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:20:56,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:20:56,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:20:56,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:20:56,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:20:56,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:20:56,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:20:56,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:20:56,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:20:56,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:20:56,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:20:56,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:20:56,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:20:56,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:20:56,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:20:56,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:20:56,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:20:56,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:20:56,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:20:56,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:20:56,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:20:56,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:20:56,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:20:56,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:20:56,182 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 19:20:56,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:20:56,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:20:56,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:20:56,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:20:56,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:20:56,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:20:56,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:20:56,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:20:56,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:20:56,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:20:56,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:20:56,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:20:56,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:20:56,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:20:56,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:20:56,224 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:20:56,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:20:56,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:20:56,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:20:56,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:20:56,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:20:56,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:20:56,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:20:56,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:20:56,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:20:56,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:20:56,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:20:56,838 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:20:56,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product27.cil.c [2021-02-21 19:20:56,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80dc6d1a5/037c9c6b6e7842ed8861ae0c3a77d47c/FLAGbb7b3f60d [2021-02-21 19:20:57,903 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:20:57,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product27.cil.c [2021-02-21 19:20:57,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80dc6d1a5/037c9c6b6e7842ed8861ae0c3a77d47c/FLAGbb7b3f60d [2021-02-21 19:20:58,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80dc6d1a5/037c9c6b6e7842ed8861ae0c3a77d47c [2021-02-21 19:20:58,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:20:58,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:20:58,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:20:58,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:20:58,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:20:58,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:58,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd24312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58, skipping insertion in model container [2021-02-21 19:20:58,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:58,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:20:58,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:20:58,473 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_spec4_product27.cil.c[2573,2586] [2021-02-21 19:20:58,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:20:58,717 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:20:58,741 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_spec4_product27.cil.c[2573,2586] [2021-02-21 19:20:58,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:20:58,854 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:20:58,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58 WrapperNode [2021-02-21 19:20:58,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:20:58,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:20:58,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:20:58,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:20:58,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:58,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:58,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:58,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:59,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:59,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:59,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (1/1) ... [2021-02-21 19:20:59,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:20:59,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:20:59,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:20:59,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:20:59,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (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 19:20:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:20:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:20:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:20:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:20:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:20:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:20:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:20:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:20:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:20:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:20:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:20:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:20:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:20:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:20:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:20:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:20:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:20:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:20:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:20:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:20:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:20:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:20:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:20:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:20:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:20:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:20:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:20:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:20:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:20:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:20:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:20:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:20:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:20:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:20:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:20:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:20:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:20:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:20:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:20:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:20:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:20:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:20:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:20:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:20:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:20:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:20:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:20:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:20:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:20:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:20:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:20:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:20:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:20:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:20:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:20:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:20:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:20:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:20:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:20:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:20:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:20:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:20:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:20:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:20:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:20:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:20:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:20:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:21:00,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:21:00,695 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:21:00,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:21:00 BoogieIcfgContainer [2021-02-21 19:21:00,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:21:00,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:21:00,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:21:00,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:21:00,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:20:58" (1/3) ... [2021-02-21 19:21:00,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab88e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:21:00, skipping insertion in model container [2021-02-21 19:21:00,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:20:58" (2/3) ... [2021-02-21 19:21:00,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab88e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:21:00, skipping insertion in model container [2021-02-21 19:21:00,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:21:00" (3/3) ... [2021-02-21 19:21:00,710 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product27.cil.c [2021-02-21 19:21:00,718 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:21:00,726 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:21:00,752 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:21:00,803 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:21:00,803 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:21:00,803 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:21:00,804 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:21:00,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:21:00,805 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:21:00,805 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:21:00,805 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:21:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2021-02-21 19:21:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:21:00,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:00,887 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] [2021-02-21 19:21:00,887 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:00,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1513835476, now seen corresponding path program 1 times [2021-02-21 19:21:00,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:00,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829404060] [2021-02-21 19:21:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:01,045 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:01,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:01,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:01,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:01,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,026 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:21:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:21:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:02,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:02,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:02,285 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 19:21:02,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829404060] [2021-02-21 19:21:02,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:02,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:21:02,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109572428] [2021-02-21 19:21:02,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:21:02,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:02,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:21:02,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:21:02,326 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 3 states. [2021-02-21 19:21:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:04,222 INFO L93 Difference]: Finished difference Result 433 states and 518 transitions. [2021-02-21 19:21:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:21:04,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:21:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:04,244 INFO L225 Difference]: With dead ends: 433 [2021-02-21 19:21:04,245 INFO L226 Difference]: Without dead ends: 276 [2021-02-21 19:21:04,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:21:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-21 19:21:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 235. [2021-02-21 19:21:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-21 19:21:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 254 transitions. [2021-02-21 19:21:04,464 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 254 transitions. Word has length 147 [2021-02-21 19:21:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:04,465 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 254 transitions. [2021-02-21 19:21:04,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:21:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 254 transitions. [2021-02-21 19:21:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:21:04,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:04,471 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] [2021-02-21 19:21:04,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:21:04,472 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash -979502395, now seen corresponding path program 1 times [2021-02-21 19:21:04,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:04,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209273767] [2021-02-21 19:21:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:04,479 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:04,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:04,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:04,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:04,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:04,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:04,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,028 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:05,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:21:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:21:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:05,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:05,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:05,169 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 19:21:05,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209273767] [2021-02-21 19:21:05,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:05,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:21:05,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676848985] [2021-02-21 19:21:05,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:21:05,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:21:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:21:05,174 INFO L87 Difference]: Start difference. First operand 235 states and 254 transitions. Second operand 4 states. [2021-02-21 19:21:06,141 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:21:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:07,179 INFO L93 Difference]: Finished difference Result 343 states and 384 transitions. [2021-02-21 19:21:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:21:07,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:21:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:07,196 INFO L225 Difference]: With dead ends: 343 [2021-02-21 19:21:07,197 INFO L226 Difference]: Without dead ends: 259 [2021-02-21 19:21:07,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:21:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-21 19:21:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 225. [2021-02-21 19:21:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2021-02-21 19:21:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 241 transitions. [2021-02-21 19:21:07,307 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 241 transitions. Word has length 148 [2021-02-21 19:21:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:07,308 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 241 transitions. [2021-02-21 19:21:07,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:21:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 241 transitions. [2021-02-21 19:21:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:21:07,311 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:07,311 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] [2021-02-21 19:21:07,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:21:07,312 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:07,313 INFO L82 PathProgramCache]: Analyzing trace with hash -235980144, now seen corresponding path program 1 times [2021-02-21 19:21:07,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:07,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934099703] [2021-02-21 19:21:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:07,318 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:07,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:07,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:07,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:07,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:07,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:07,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:07,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:07,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:07,868 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:07,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:07,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:21:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:07,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:07,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:07,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:07,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:07,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:21:08,020 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:21:08,022 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:21:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:08,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:08,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:21:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:08,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:08,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:21:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:08,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:08,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:08,101 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 19:21:08,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934099703] [2021-02-21 19:21:08,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:08,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:21:08,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783675873] [2021-02-21 19:21:08,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:21:08,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:08,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:21:08,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:21:08,104 INFO L87 Difference]: Start difference. First operand 225 states and 241 transitions. Second operand 9 states. [2021-02-21 19:21:08,967 WARN L202 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:21:09,460 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:21:09,849 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:21:10,220 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:10,643 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:11,054 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:12,384 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:21:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:14,419 INFO L93 Difference]: Finished difference Result 572 states and 658 transitions. [2021-02-21 19:21:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:21:14,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:21:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:14,425 INFO L225 Difference]: With dead ends: 572 [2021-02-21 19:21:14,426 INFO L226 Difference]: Without dead ends: 462 [2021-02-21 19:21:14,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:21:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-02-21 19:21:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 399. [2021-02-21 19:21:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2021-02-21 19:21:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 445 transitions. [2021-02-21 19:21:14,672 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 445 transitions. Word has length 157 [2021-02-21 19:21:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:14,673 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 445 transitions. [2021-02-21 19:21:14,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:21:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 445 transitions. [2021-02-21 19:21:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:21:14,677 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:14,678 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] [2021-02-21 19:21:14,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:21:14,678 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:14,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:14,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1833278051, now seen corresponding path program 1 times [2021-02-21 19:21:14,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:14,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280125612] [2021-02-21 19:21:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:14,683 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:14,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:14,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:14,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:14,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:14,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:14,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:14,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:14,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:14,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:14,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:21:14,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:14,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,185 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:21:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:21:15,324 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:21:15,326 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:21:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:21:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:21:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:21:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:15,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:15,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:21:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:15,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:15,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:15,469 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 19:21:15,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280125612] [2021-02-21 19:21:15,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:15,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:21:15,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540077534] [2021-02-21 19:21:15,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:21:15,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:21:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:21:15,473 INFO L87 Difference]: Start difference. First operand 399 states and 445 transitions. Second operand 14 states. [2021-02-21 19:21:16,438 WARN L202 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:21:16,968 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:21:17,368 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:21:17,813 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:18,219 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:18,627 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:19,518 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:21:21,038 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:21,486 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:21,991 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:22,511 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:21:22,900 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:21:23,328 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:21:23,748 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:21:24,156 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:24,579 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:25,052 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:25,622 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:21:26,073 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:21:26,515 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:21:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:28,487 INFO L93 Difference]: Finished difference Result 1461 states and 1862 transitions. [2021-02-21 19:21:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:21:28,488 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-21 19:21:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:28,499 INFO L225 Difference]: With dead ends: 1461 [2021-02-21 19:21:28,499 INFO L226 Difference]: Without dead ends: 1177 [2021-02-21 19:21:28,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:21:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-02-21 19:21:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 904. [2021-02-21 19:21:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-02-21 19:21:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1046 transitions. [2021-02-21 19:21:28,975 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1046 transitions. Word has length 165 [2021-02-21 19:21:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:28,975 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1046 transitions. [2021-02-21 19:21:28,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:21:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1046 transitions. [2021-02-21 19:21:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-21 19:21:28,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:28,982 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] [2021-02-21 19:21:28,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:21:28,982 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:28,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1139091639, now seen corresponding path program 1 times [2021-02-21 19:21:28,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:28,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139012595] [2021-02-21 19:21:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:21:28,987 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:21:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:29,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:29,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:29,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:29,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:29,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,396 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:21:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:21:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:21:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:21:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:21:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:21:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:21:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:21:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:21:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 19:21:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:21:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:21:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 19:21:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:21:29,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:21:29,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:21:29,572 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 19:21:29,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139012595] [2021-02-21 19:21:29,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:21:29,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:21:29,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507859956] [2021-02-21 19:21:29,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:21:29,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:21:29,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:21:29,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:21:29,576 INFO L87 Difference]: Start difference. First operand 904 states and 1046 transitions. Second operand 6 states. [2021-02-21 19:21:30,353 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:21:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:21:31,425 INFO L93 Difference]: Finished difference Result 1466 states and 1748 transitions. [2021-02-21 19:21:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:21:31,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2021-02-21 19:21:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:21:31,431 INFO L225 Difference]: With dead ends: 1466 [2021-02-21 19:21:31,431 INFO L226 Difference]: Without dead ends: 677 [2021-02-21 19:21:31,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:21:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-02-21 19:21:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 643. [2021-02-21 19:21:31,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-02-21 19:21:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 702 transitions. [2021-02-21 19:21:31,766 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 702 transitions. Word has length 175 [2021-02-21 19:21:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:21:31,767 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 702 transitions. [2021-02-21 19:21:31,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:21:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 702 transitions. [2021-02-21 19:21:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:21:31,772 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:21:31,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:31,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:21:31,774 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:21:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:21:31,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1223251380, now seen corresponding path program 1 times [2021-02-21 19:21:31,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:21:31,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971345414] [2021-02-21 19:21:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY