/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_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:11:34,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:11:34,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:11:34,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:11:34,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:11:34,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:11:34,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:11:34,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:11:34,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:11:34,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:11:34,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:11:34,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:11:34,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:11:34,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:11:34,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:11:34,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:11:34,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:11:34,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:11:34,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:11:34,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:11:34,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:11:34,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:11:34,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:11:34,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:11:34,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:11:34,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:11:34,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:11:34,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:11:34,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:11:34,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:11:34,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:11:34,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:11:34,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:11:34,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:11:34,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:11:34,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:11:34,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:11:34,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:11:34,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:11:34,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:11:34,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:11:34,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:11:34,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:11:34,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:11:34,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:11:34,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:11:34,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:11:34,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:11:34,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:11:34,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:11:34,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:11:34,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:11:34,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:11:34,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:11:34,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:11:34,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:11:34,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:11:34,257 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:11:34,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:11:34,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:11:34,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:11:34,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:11:34,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:11:34,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:11:34,259 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:11:34,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:11:34,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:11:34,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:11:34,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:11:34,812 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:11:34,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2021-02-23 17:11:34,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a80a852/910fb25c7e6d4eaf8c189bc3e67897d5/FLAG1f3275e49 [2021-02-23 17:11:35,830 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:11:35,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2021-02-23 17:11:35,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a80a852/910fb25c7e6d4eaf8c189bc3e67897d5/FLAG1f3275e49 [2021-02-23 17:11:36,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a80a852/910fb25c7e6d4eaf8c189bc3e67897d5 [2021-02-23 17:11:36,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:11:36,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:11:36,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:11:36,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:11:36,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:11:36,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:36,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7587ab71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36, skipping insertion in model container [2021-02-23 17:11:36,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:36,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:11:36,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:11:36,511 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_product58.cil.c[11394,11407] [2021-02-23 17:11:36,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:11:36,615 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:11:36,685 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_product58.cil.c[11394,11407] [2021-02-23 17:11:36,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:11:36,839 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:11:36,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36 WrapperNode [2021-02-23 17:11:36,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:11:36,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:11:36,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:11:36,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:11:36,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:36,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:36,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:36,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:37,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:37,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:37,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... [2021-02-23 17:11:37,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:11:37,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:11:37,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:11:37,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:11:37,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:11:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:11:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:11:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 17:11:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:11:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 17:11:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 17:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 17:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 17:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 17:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 17:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:11:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 17:11:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 17:11:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 17:11:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 17:11:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 17:11:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 17:11:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 17:11:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 17:11:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 17:11:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 17:11:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 17:11:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 17:11:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 17:11:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 17:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 17:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 17:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 17:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 17:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 17:11:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 17:11:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 17:11:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 17:11:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 17:11:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 17:11:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 17:11:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 17:11:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 17:11:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 17:11:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 17:11:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 17:11:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 17:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 17:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 17:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 17:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 17:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 17:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 17:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 17:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 17:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 17:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 17:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 17:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 17:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 17:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 17:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 17:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 17:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 17:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 17:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 17:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 17:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 17:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 17:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 17:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 17:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 17:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 17:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 17:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 17:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 17:11:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 17:11:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 17:11:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 17:11:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:11:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 17:11:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 17:11:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 17:11:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 17:11:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 17:11:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 17:11:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 17:11:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 17:11:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 17:11:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 17:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 17:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:11:39,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:11:39,457 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 17:11:39,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:11:39 BoogieIcfgContainer [2021-02-23 17:11:39,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:11:39,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:11:39,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:11:39,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:11:39,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:11:36" (1/3) ... [2021-02-23 17:11:39,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cf9280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:11:39, skipping insertion in model container [2021-02-23 17:11:39,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:11:36" (2/3) ... [2021-02-23 17:11:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cf9280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:11:39, skipping insertion in model container [2021-02-23 17:11:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:11:39" (3/3) ... [2021-02-23 17:11:39,478 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2021-02-23 17:11:39,486 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:11:39,492 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:11:39,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:11:39,541 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:11:39,541 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:11:39,542 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:11:39,542 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:11:39,542 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:11:39,542 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:11:39,542 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:11:39,542 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:11:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states. [2021-02-23 17:11:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 17:11:39,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:39,597 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] [2021-02-23 17:11:39,597 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1556435048, now seen corresponding path program 1 times [2021-02-23 17:11:39,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:39,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48759830] [2021-02-23 17:11:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:39,719 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:40,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:40,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:40,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:40,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:40,946 WARN L202 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 17:11:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 17:11:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:41,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:41,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:11:41,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48759830] [2021-02-23 17:11:41,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:41,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:11:41,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572608358] [2021-02-23 17:11:41,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:11:41,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:41,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:11:41,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:11:41,237 INFO L87 Difference]: Start difference. First operand 344 states. Second operand 3 states. [2021-02-23 17:11:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:44,493 INFO L93 Difference]: Finished difference Result 550 states and 644 transitions. [2021-02-23 17:11:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:11:44,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 17:11:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:44,538 INFO L225 Difference]: With dead ends: 550 [2021-02-23 17:11:44,538 INFO L226 Difference]: Without dead ends: 336 [2021-02-23 17:11:44,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:11:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-02-23 17:11:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 292. [2021-02-23 17:11:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-02-23 17:11:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 315 transitions. [2021-02-23 17:11:44,797 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 315 transitions. Word has length 147 [2021-02-23 17:11:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:44,802 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 315 transitions. [2021-02-23 17:11:44,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:11:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 315 transitions. [2021-02-23 17:11:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:11:44,820 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:44,821 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] [2021-02-23 17:11:44,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:11:44,823 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:44,824 INFO L82 PathProgramCache]: Analyzing trace with hash 102353542, now seen corresponding path program 1 times [2021-02-23 17:11:44,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:44,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652011489] [2021-02-23 17:11:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:44,836 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:45,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,783 WARN L202 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 17:11:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:11:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:45,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:45,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:11:45,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652011489] [2021-02-23 17:11:45,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:45,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:11:45,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289028011] [2021-02-23 17:11:45,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:11:45,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:45,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:11:45,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:11:45,918 INFO L87 Difference]: Start difference. First operand 292 states and 315 transitions. Second operand 4 states. [2021-02-23 17:11:47,402 WARN L202 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:11:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:11:49,876 INFO L93 Difference]: Finished difference Result 462 states and 514 transitions. [2021-02-23 17:11:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:11:49,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 17:11:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:11:49,882 INFO L225 Difference]: With dead ends: 462 [2021-02-23 17:11:49,883 INFO L226 Difference]: Without dead ends: 319 [2021-02-23 17:11:49,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:11:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-02-23 17:11:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2021-02-23 17:11:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-23 17:11:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 302 transitions. [2021-02-23 17:11:50,014 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 302 transitions. Word has length 148 [2021-02-23 17:11:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:11:50,015 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 302 transitions. [2021-02-23 17:11:50,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:11:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 302 transitions. [2021-02-23 17:11:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 17:11:50,019 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:11:50,019 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] [2021-02-23 17:11:50,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:11:50,020 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:11:50,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:11:50,021 INFO L82 PathProgramCache]: Analyzing trace with hash -30124071, now seen corresponding path program 1 times [2021-02-23 17:11:50,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:11:50,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641822542] [2021-02-23 17:11:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:11:50,026 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:11:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:50,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:50,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:50,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:50,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:50,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:11:50,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:50,913 WARN L202 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:11:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:11:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:50,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:11:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:50,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:11:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:50,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:11:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:50,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:50,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:51,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:51,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:11:51,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:51,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:11:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:11:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:51,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:51,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:51,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 17:11:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:51,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:51,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:11:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 17:11:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:51,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:51,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 17:11:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:11:51,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:11:51,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:11:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:11:51,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641822542] [2021-02-23 17:11:51,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:11:51,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:11:51,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016674257] [2021-02-23 17:11:51,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:11:51,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:11:51,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:11:51,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:11:51,184 INFO L87 Difference]: Start difference. First operand 282 states and 302 transitions. Second operand 10 states. [2021-02-23 17:11:52,555 WARN L202 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:11:53,569 WARN L202 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:11:54,458 WARN L202 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 17:11:55,326 WARN L202 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:11:56,191 WARN L202 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:11:57,065 WARN L202 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:12:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:12:00,980 INFO L93 Difference]: Finished difference Result 508 states and 576 transitions. [2021-02-23 17:12:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:12:00,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 17:12:00,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:12:00,985 INFO L225 Difference]: With dead ends: 508 [2021-02-23 17:12:00,986 INFO L226 Difference]: Without dead ends: 341 [2021-02-23 17:12:00,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:12:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-02-23 17:12:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 282. [2021-02-23 17:12:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-23 17:12:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 301 transitions. [2021-02-23 17:12:01,115 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 301 transitions. Word has length 161 [2021-02-23 17:12:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:12:01,116 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 301 transitions. [2021-02-23 17:12:01,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:12:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 301 transitions. [2021-02-23 17:12:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-23 17:12:01,121 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:12:01,122 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] [2021-02-23 17:12:01,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:12:01,122 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:12:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:12:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash -689326448, now seen corresponding path program 1 times [2021-02-23 17:12:01,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:12:01,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274508066] [2021-02-23 17:12:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:12:01,128 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:12:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:01,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:01,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:01,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:01,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:01,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:01,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:01,924 WARN L202 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:12:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:12:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:01,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:01,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:01,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:01,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:12:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:12:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:12:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:12:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 17:12:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:12:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:02,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:12:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:02,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:12:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 17:12:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-23 17:12:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:02,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:02,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:12:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274508066] [2021-02-23 17:12:02,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:12:02,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:12:02,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179895069] [2021-02-23 17:12:02,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:12:02,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:12:02,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:12:02,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:12:02,216 INFO L87 Difference]: Start difference. First operand 282 states and 301 transitions. Second operand 7 states. [2021-02-23 17:12:03,538 WARN L202 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:12:07,404 WARN L202 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:12:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:12:09,678 INFO L93 Difference]: Finished difference Result 688 states and 806 transitions. [2021-02-23 17:12:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 17:12:09,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-23 17:12:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:12:09,685 INFO L225 Difference]: With dead ends: 688 [2021-02-23 17:12:09,686 INFO L226 Difference]: Without dead ends: 521 [2021-02-23 17:12:09,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:12:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-02-23 17:12:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 394. [2021-02-23 17:12:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-02-23 17:12:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 422 transitions. [2021-02-23 17:12:09,966 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 422 transitions. Word has length 174 [2021-02-23 17:12:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:12:09,968 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 422 transitions. [2021-02-23 17:12:09,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:12:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 422 transitions. [2021-02-23 17:12:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-23 17:12:09,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:12:09,973 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] [2021-02-23 17:12:09,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:12:09,973 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:12:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:12:09,975 INFO L82 PathProgramCache]: Analyzing trace with hash 431480062, now seen corresponding path program 1 times [2021-02-23 17:12:09,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:12:09,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953346160] [2021-02-23 17:12:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:12:09,987 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:12:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:10,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:10,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:10,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:10,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:10,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:10,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:10,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:10,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:10,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:10,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:12:10,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:10,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,016 WARN L202 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:12:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:12:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:12:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:12:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:12:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:12:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:12:11,144 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 17:12:11,147 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 17:12:11,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:12:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 17:12:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:12:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:12:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:12:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:12:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 17:12:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-23 17:12:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:11,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:12:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-23 17:12:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:12:11,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:12:11,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:12:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:12:11,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953346160] [2021-02-23 17:12:11,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:12:11,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:12:11,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205352367] [2021-02-23 17:12:11,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:12:11,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:12:11,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:12:11,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:12:11,461 INFO L87 Difference]: Start difference. First operand 394 states and 422 transitions. Second operand 15 states. [2021-02-23 17:12:12,808 WARN L202 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:12:13,888 WARN L202 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:12:14,764 WARN L202 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:12:15,656 WARN L202 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:12:16,526 WARN L202 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:12:17,368 WARN L202 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:12:19,073 WARN L202 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:12:21,976 WARN L202 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:12:22,869 WARN L202 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:12:23,887 WARN L202 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:12:24,820 WARN L202 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:12:25,661 WARN L202 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:12:26,513 WARN L202 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:12:27,379 WARN L202 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:12:28,413 WARN L202 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:12:29,451 WARN L202 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 17:12:30,470 WARN L202 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 17:12:35,491 WARN L202 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:12:36,435 WARN L202 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:12:37,790 WARN L202 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:12:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:12:41,119 INFO L93 Difference]: Finished difference Result 1393 states and 1730 transitions. [2021-02-23 17:12:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 17:12:41,121 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 198 [2021-02-23 17:12:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:12:41,131 INFO L225 Difference]: With dead ends: 1393 [2021-02-23 17:12:41,131 INFO L226 Difference]: Without dead ends: 1114 [2021-02-23 17:12:41,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 17:12:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-02-23 17:12:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 815. [2021-02-23 17:12:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2021-02-23 17:12:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 899 transitions. [2021-02-23 17:12:41,656 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 899 transitions. Word has length 198 [2021-02-23 17:12:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:12:41,657 INFO L480 AbstractCegarLoop]: Abstraction has 815 states and 899 transitions. [2021-02-23 17:12:41,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:12:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 899 transitions. [2021-02-23 17:12:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-02-23 17:12:41,668 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:12:41,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:12:41,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:12:41,670 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:12:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:12:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1040636898, now seen corresponding path program 1 times [2021-02-23 17:12:41,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:12:41,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845790138] [2021-02-23 17:12:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY