/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-b7b32d2 [2021-02-21 19:44:23,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:44:23,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:44:23,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:44:23,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:44:23,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:44:23,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:44:23,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:44:23,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:44:23,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:44:23,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:44:23,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:44:23,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:44:23,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:44:23,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:44:23,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:44:23,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:44:23,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:44:23,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:44:23,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:44:23,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:44:23,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:44:23,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:44:23,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:44:23,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:44:23,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:44:23,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:44:23,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:44:23,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:44:23,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-21 19:44:23,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:44:23,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:44:23,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:44:23,362 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 19:44:23,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:44:23,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:44:23,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:44:23,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:44:23,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:44:23,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:44:23,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:44:23,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:44:23,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:44:23,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:44:23,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:44:23,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:44:23,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:44:23,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:44:23,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:44:23,402 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:44:23,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:44:23,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:44:23,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:44:23,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:44:23,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:44:23,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:44:23,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:44:23,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:44:23,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:44:23,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:44:23,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:44:23,901 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:44:23,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2021-02-21 19:44:23,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebedce67/4a0e197323444f31802022bf816ef803/FLAGef1dc19e1 [2021-02-21 19:44:24,747 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:44:24,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2021-02-21 19:44:24,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebedce67/4a0e197323444f31802022bf816ef803/FLAGef1dc19e1 [2021-02-21 19:44:25,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebedce67/4a0e197323444f31802022bf816ef803 [2021-02-21 19:44:25,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:44:25,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:44:25,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:44:25,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:44:25,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:44:25,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:25,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67166f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25, skipping insertion in model container [2021-02-21 19:44:25,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:25,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:44:25,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:44:25,523 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] [2021-02-21 19:44:25,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:44:25,642 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:44:25,759 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] [2021-02-21 19:44:25,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:44:25,906 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:44:25,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25 WrapperNode [2021-02-21 19:44:25,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:44:25,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:44:25,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:44:25,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:44:25,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:25,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:26,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:26,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:26,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:26,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:26,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (1/1) ... [2021-02-21 19:44:26,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:44:26,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:44:26,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:44:26,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:44:26,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (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 19:44:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:44:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:44:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:44:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:44:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:44:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:44:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:44:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:44:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:44:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:44:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:44:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:44:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:44:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:44:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:44:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:44:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:44:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:44:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:44:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:44:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:44:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:44:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:44:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:44:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:44:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:44:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:44:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:44:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:44:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:44:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:44:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:44:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:44:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:44:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:44:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:44:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:44:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:44:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:44:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:44:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:44:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:44:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:44:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:44:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:44:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:44:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:44:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:44:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:44:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:44:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:44:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:44:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:44:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:44:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:44:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:44:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:44:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:44:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:44:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:44:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:44:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:44:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:44:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:44:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:44:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:44:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:44:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:44:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:44:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:44:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:44:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:44:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:44:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:44:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:44:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:44:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:44:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:44:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:44:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:44:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:44:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:44:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:44:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:44:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:44:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:44:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:44:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:44:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:44:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:44:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:44:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:44:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:44:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:44:28,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:44:28,356 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:44:28,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:44:28 BoogieIcfgContainer [2021-02-21 19:44:28,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:44:28,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:44:28,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:44:28,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:44:28,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:44:25" (1/3) ... [2021-02-21 19:44:28,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494ee51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:44:28, skipping insertion in model container [2021-02-21 19:44:28,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:25" (2/3) ... [2021-02-21 19:44:28,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494ee51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:44:28, skipping insertion in model container [2021-02-21 19:44:28,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:44:28" (3/3) ... [2021-02-21 19:44:28,375 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2021-02-21 19:44:28,384 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:44:28,392 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:44:28,421 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:44:28,453 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:44:28,453 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:44:28,453 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:44:28,453 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:44:28,454 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:44:28,454 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:44:28,454 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:44:28,454 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:44:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states. [2021-02-21 19:44:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:44:28,509 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:28,511 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 19:44:28,511 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:28,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1556435048, now seen corresponding path program 1 times [2021-02-21 19:44:28,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:28,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748798309] [2021-02-21 19:44:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:28,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,713 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:44:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:44:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:29,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:29,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:29,978 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 19:44:29,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748798309] [2021-02-21 19:44:29,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:29,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:44:29,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383214311] [2021-02-21 19:44:29,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:44:29,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:30,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:44:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:44:30,010 INFO L87 Difference]: Start difference. First operand 344 states. Second operand 3 states. [2021-02-21 19:44:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:32,157 INFO L93 Difference]: Finished difference Result 550 states and 644 transitions. [2021-02-21 19:44:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:44:32,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:44:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:32,180 INFO L225 Difference]: With dead ends: 550 [2021-02-21 19:44:32,181 INFO L226 Difference]: Without dead ends: 336 [2021-02-21 19:44:32,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:44:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-02-21 19:44:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 292. [2021-02-21 19:44:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-02-21 19:44:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 315 transitions. [2021-02-21 19:44:32,421 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 315 transitions. Word has length 147 [2021-02-21 19:44:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:32,425 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 315 transitions. [2021-02-21 19:44:32,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:44:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 315 transitions. [2021-02-21 19:44:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:44:32,440 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:32,440 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 19:44:32,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:44:32,441 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 102353542, now seen corresponding path program 1 times [2021-02-21 19:44:32,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:32,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472296864] [2021-02-21 19:44:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:32,450 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:32,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:32,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:32,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:32,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:32,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:32,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,078 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:44:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:44:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:33,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:33,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:33,288 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 19:44:33,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472296864] [2021-02-21 19:44:33,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:33,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:44:33,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905076916] [2021-02-21 19:44:33,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:44:33,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:33,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:44:33,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:44:33,296 INFO L87 Difference]: Start difference. First operand 292 states and 315 transitions. Second operand 4 states. [2021-02-21 19:44:34,229 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:35,761 INFO L93 Difference]: Finished difference Result 462 states and 514 transitions. [2021-02-21 19:44:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:44:35,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:44:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:35,777 INFO L225 Difference]: With dead ends: 462 [2021-02-21 19:44:35,777 INFO L226 Difference]: Without dead ends: 319 [2021-02-21 19:44:35,786 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 19:44:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-02-21 19:44:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2021-02-21 19:44:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-21 19:44:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 302 transitions. [2021-02-21 19:44:35,938 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 302 transitions. Word has length 148 [2021-02-21 19:44:35,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:35,939 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 302 transitions. [2021-02-21 19:44:35,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:44:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 302 transitions. [2021-02-21 19:44:35,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:44:35,942 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:35,942 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] [2021-02-21 19:44:35,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:44:35,943 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:35,944 INFO L82 PathProgramCache]: Analyzing trace with hash -30124071, now seen corresponding path program 1 times [2021-02-21 19:44:35,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:35,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099658131] [2021-02-21 19:44:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:35,949 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:36,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:36,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:36,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,471 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:44:36,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:44:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:44:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:44:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:44:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:36,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:36,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:36,685 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 19:44:36,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099658131] [2021-02-21 19:44:36,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:36,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:44:36,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773537444] [2021-02-21 19:44:36,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:44:36,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:44:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:44:36,690 INFO L87 Difference]: Start difference. First operand 282 states and 302 transitions. Second operand 10 states. [2021-02-21 19:44:37,416 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:37,932 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:38,361 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:44:38,778 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:39,252 WARN L202 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:39,665 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:42,072 INFO L93 Difference]: Finished difference Result 508 states and 576 transitions. [2021-02-21 19:44:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:44:42,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:44:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:42,077 INFO L225 Difference]: With dead ends: 508 [2021-02-21 19:44:42,078 INFO L226 Difference]: Without dead ends: 341 [2021-02-21 19:44:42,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:44:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-02-21 19:44:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 282. [2021-02-21 19:44:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-02-21 19:44:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 301 transitions. [2021-02-21 19:44:42,221 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 301 transitions. Word has length 161 [2021-02-21 19:44:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:42,222 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 301 transitions. [2021-02-21 19:44:42,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:44:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 301 transitions. [2021-02-21 19:44:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-21 19:44:42,226 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:42,226 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] [2021-02-21 19:44:42,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:44:42,227 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash -689326448, now seen corresponding path program 1 times [2021-02-21 19:44:42,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:42,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887965877] [2021-02-21 19:44:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:42,232 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,716 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:44:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:44:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:44:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:44:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:44:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 19:44:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,941 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 19:44:42,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887965877] [2021-02-21 19:44:42,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:42,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:44:42,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394349730] [2021-02-21 19:44:42,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:44:42,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:42,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:44:42,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:44:42,944 INFO L87 Difference]: Start difference. First operand 282 states and 301 transitions. Second operand 7 states. [2021-02-21 19:44:43,683 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:45,945 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:47,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:47,240 INFO L93 Difference]: Finished difference Result 688 states and 806 transitions. [2021-02-21 19:44:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:44:47,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-21 19:44:47,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:47,247 INFO L225 Difference]: With dead ends: 688 [2021-02-21 19:44:47,247 INFO L226 Difference]: Without dead ends: 521 [2021-02-21 19:44:47,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:44:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-02-21 19:44:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 394. [2021-02-21 19:44:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-02-21 19:44:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 422 transitions. [2021-02-21 19:44:47,506 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 422 transitions. Word has length 174 [2021-02-21 19:44:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:47,507 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 422 transitions. [2021-02-21 19:44:47,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:44:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 422 transitions. [2021-02-21 19:44:47,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-21 19:44:47,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:47,511 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] [2021-02-21 19:44:47,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:44:47,512 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:47,512 INFO L82 PathProgramCache]: Analyzing trace with hash 431480062, now seen corresponding path program 1 times [2021-02-21 19:44:47,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:47,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656003482] [2021-02-21 19:44:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:47,516 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:47,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:47,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:47,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:47,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:47,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:47,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:47,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:47,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:47,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:47,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:47,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:47,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,041 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:44:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:44:48,190 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:44:48,192 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:44:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:44:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:44:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:44:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:44:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:44:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:44:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-21 19:44:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:48,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-21 19:44:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:48,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:48,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:48,483 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 19:44:48,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656003482] [2021-02-21 19:44:48,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:48,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:44:48,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545296718] [2021-02-21 19:44:48,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:44:48,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:44:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:44:48,487 INFO L87 Difference]: Start difference. First operand 394 states and 422 transitions. Second operand 15 states. [2021-02-21 19:44:49,338 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:49,876 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:50,305 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:50,731 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:51,160 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:51,542 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:52,450 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:54,143 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:54,590 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:55,100 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:55,563 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:44:55,984 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:56,389 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:56,808 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:57,330 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:57,837 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:44:58,323 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:45:01,125 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:45:01,596 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:45:02,313 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:45:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:45:04,081 INFO L93 Difference]: Finished difference Result 1393 states and 1730 transitions. [2021-02-21 19:45:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:45:04,082 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 198 [2021-02-21 19:45:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:45:04,094 INFO L225 Difference]: With dead ends: 1393 [2021-02-21 19:45:04,094 INFO L226 Difference]: Without dead ends: 1114 [2021-02-21 19:45:04,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:45:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-02-21 19:45:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 815. [2021-02-21 19:45:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2021-02-21 19:45:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 899 transitions. [2021-02-21 19:45:04,550 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 899 transitions. Word has length 198 [2021-02-21 19:45:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:45:04,551 INFO L480 AbstractCegarLoop]: Abstraction has 815 states and 899 transitions. [2021-02-21 19:45:04,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:45:04,551 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 899 transitions. [2021-02-21 19:45:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-02-21 19:45:04,559 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:45:04,560 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] [2021-02-21 19:45:04,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:45:04,561 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:45:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:45:04,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1040636898, now seen corresponding path program 1 times [2021-02-21 19:45:04,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:45:04,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376620983] [2021-02-21 19:45:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY