/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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:44:33,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:44:33,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:44:34,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:44:34,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:44:34,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:44:34,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:44:34,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:44:34,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:44:34,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:44:34,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:44:34,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:44:34,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:44:34,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:44:34,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:44:34,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:44:34,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:44:34,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:44:34,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:44:34,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:44:34,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:44:34,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:44:34,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:44:34,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:44:34,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:44:34,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:44:34,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:44:34,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:44:34,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:44:34,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:44:34,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:44:34,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:44:34,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:44:34,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:44:34,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:44:34,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:44:34,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:44:34,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:44:34,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:44:34,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:44:34,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:44:34,138 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 19:44:34,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:44:34,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:44:34,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:44:34,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:44:34,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:44:34,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:44:34,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:44:34,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:44:34,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:44:34,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:44:34,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:44:34,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:44:34,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:44:34,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:44:34,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:44:34,176 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:44:34,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:44:34,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:44:34,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:44:34,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:44:34,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:44:34,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:44:34,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:44:34,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:44:34,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:44:34,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:44:34,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:44:34,689 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:44:34,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2021-02-21 19:44:34,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76e23204/5eba5a6a07e5471ea27dbf79c5f83567/FLAG03d5dab6e [2021-02-21 19:44:35,496 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:44:35,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2021-02-21 19:44:35,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76e23204/5eba5a6a07e5471ea27dbf79c5f83567/FLAG03d5dab6e [2021-02-21 19:44:35,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76e23204/5eba5a6a07e5471ea27dbf79c5f83567 [2021-02-21 19:44:35,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:44:35,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:44:35,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:44:35,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:44:35,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:44:35,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:44:35" (1/1) ... [2021-02-21 19:44:35,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7b2378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:35, skipping insertion in model container [2021-02-21 19:44:35,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:44:35" (1/1) ... [2021-02-21 19:44:35,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:44:35,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:44:36,141 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_product59.cil.c[8847,8860] [2021-02-21 19:44:36,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:44:36,285 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:44:36,348 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_product59.cil.c[8847,8860] [2021-02-21 19:44:36,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:44:36,432 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:44:36,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36 WrapperNode [2021-02-21 19:44:36,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:44:36,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:44:36,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:44:36,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:44:36,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (1/1) ... [2021-02-21 19:44:36,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:44:36,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:44:36,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:44:36,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:44:36,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (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 [2021-02-21 19:44:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:44:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:44:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:44:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:44:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:44:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:44:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:44:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:44:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:44:36,667 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:44:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:44:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:44:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:44:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:44:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:44:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:44:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:44:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:44:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:44:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:44:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:44:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:44:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:44:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:44:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:44:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:44:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:44:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:44:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:44:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:44:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:44:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:44:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:44:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:44:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:44:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:44:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:44:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:44:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:44:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:44:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:44:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:44:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:44:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:44:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:44:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:44:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:44:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:44:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:44:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:44:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:44:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:44:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:44:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:44:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:44:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:44:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:44:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:44:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:44:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:44:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:44:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:44:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:44:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:44:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:44:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:44:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:44:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:44:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:44:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:44:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:44:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:44:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:44:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:44:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:44:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:44:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:44:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:44:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:44:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:44:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:44:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:44:38,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:44:38,224 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:44:38,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:44:38 BoogieIcfgContainer [2021-02-21 19:44:38,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:44:38,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:44:38,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:44:38,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:44:38,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:44:35" (1/3) ... [2021-02-21 19:44:38,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c069bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:44:38, skipping insertion in model container [2021-02-21 19:44:38,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:44:36" (2/3) ... [2021-02-21 19:44:38,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c069bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:44:38, skipping insertion in model container [2021-02-21 19:44:38,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:44:38" (3/3) ... [2021-02-21 19:44:38,240 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2021-02-21 19:44:38,249 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:44:38,256 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:44:38,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:44:38,310 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:44:38,310 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:44:38,310 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:44:38,310 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:44:38,311 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:44:38,311 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:44:38,311 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:44:38,311 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:44:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states. [2021-02-21 19:44:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:44:38,362 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:38,364 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 19:44:38,365 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1245438215, now seen corresponding path program 1 times [2021-02-21 19:44:38,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:38,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802265887] [2021-02-21 19:44:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:38,476 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:38,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:38,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:38,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:38,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,318 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:44:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:44:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:39,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:39,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:39,535 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 19:44:39,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802265887] [2021-02-21 19:44:39,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:39,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:44:39,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110191331] [2021-02-21 19:44:39,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:44:39,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:39,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:44:39,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:44:39,580 INFO L87 Difference]: Start difference. First operand 346 states. Second operand 3 states. [2021-02-21 19:44:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:41,568 INFO L93 Difference]: Finished difference Result 555 states and 653 transitions. [2021-02-21 19:44:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:44:41,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:44:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:41,589 INFO L225 Difference]: With dead ends: 555 [2021-02-21 19:44:41,589 INFO L226 Difference]: Without dead ends: 339 [2021-02-21 19:44:41,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:44:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-02-21 19:44:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 294. [2021-02-21 19:44:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2021-02-21 19:44:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 319 transitions. [2021-02-21 19:44:41,778 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 319 transitions. Word has length 147 [2021-02-21 19:44:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:41,779 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 319 transitions. [2021-02-21 19:44:41,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:44:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 319 transitions. [2021-02-21 19:44:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:44:41,784 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:41,784 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 19:44:41,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:44:41,785 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:41,786 INFO L82 PathProgramCache]: Analyzing trace with hash 27632194, now seen corresponding path program 1 times [2021-02-21 19:44:41,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:41,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494707390] [2021-02-21 19:44:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:41,792 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:42,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,271 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:42,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:44:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:44:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:42,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:42,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:42,428 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 19:44:42,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494707390] [2021-02-21 19:44:42,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:42,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:44:42,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393279408] [2021-02-21 19:44:42,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:44:42,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:42,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:44:42,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:44:42,438 INFO L87 Difference]: Start difference. First operand 294 states and 319 transitions. Second operand 4 states. [2021-02-21 19:44:43,178 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:44,574 INFO L93 Difference]: Finished difference Result 465 states and 519 transitions. [2021-02-21 19:44:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:44:44,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:44:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:44,582 INFO L225 Difference]: With dead ends: 465 [2021-02-21 19:44:44,582 INFO L226 Difference]: Without dead ends: 322 [2021-02-21 19:44:44,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:44:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-02-21 19:44:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 284. [2021-02-21 19:44:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2021-02-21 19:44:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 306 transitions. [2021-02-21 19:44:44,716 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 306 transitions. Word has length 148 [2021-02-21 19:44:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:44,717 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 306 transitions. [2021-02-21 19:44:44,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:44:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 306 transitions. [2021-02-21 19:44:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:44:44,720 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:44,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:44:44,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:44:44,721 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash -849888826, now seen corresponding path program 1 times [2021-02-21 19:44:44,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:44,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910905434] [2021-02-21 19:44:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:44,726 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:44,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:44,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:44,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:44,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:44,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:44,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:44,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:44,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:44,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,158 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:45,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:44:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:44:45,357 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:44:45,360 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:44:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:44:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:44:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:45,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:45,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:45,478 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 19:44:45,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910905434] [2021-02-21 19:44:45,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:45,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:44:45,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213103183] [2021-02-21 19:44:45,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:44:45,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:44:45,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:44:45,491 INFO L87 Difference]: Start difference. First operand 284 states and 306 transitions. Second operand 9 states. [2021-02-21 19:44:46,236 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:46,615 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:46,904 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:47,182 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:47,517 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:47,854 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:48,842 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:44:51,365 INFO L93 Difference]: Finished difference Result 757 states and 863 transitions. [2021-02-21 19:44:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:44:51,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:44:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:44:51,372 INFO L225 Difference]: With dead ends: 757 [2021-02-21 19:44:51,373 INFO L226 Difference]: Without dead ends: 588 [2021-02-21 19:44:51,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:44:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-02-21 19:44:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 517. [2021-02-21 19:44:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2021-02-21 19:44:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 575 transitions. [2021-02-21 19:44:51,682 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 575 transitions. Word has length 157 [2021-02-21 19:44:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:44:51,683 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 575 transitions. [2021-02-21 19:44:51,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:44:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 575 transitions. [2021-02-21 19:44:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:44:51,686 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:44:51,686 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] [2021-02-21 19:44:51,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:44:51,687 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:44:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:44:51,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1906164246, now seen corresponding path program 1 times [2021-02-21 19:44:51,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:44:51,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174550488] [2021-02-21 19:44:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:44:51,691 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:44:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:51,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:51,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:51,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:51,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:51,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:51,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:51,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:51,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:51,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:51,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:44:51,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:51,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,036 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:44:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:44:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:44:52,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:44:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:44:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:44:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:44:52,124 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:44:52,125 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:44:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:44:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:44:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:44:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:52,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:44:52,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:44:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:44:52,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:44:52,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:44:52,258 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 19:44:52,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174550488] [2021-02-21 19:44:52,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:44:52,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:44:52,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049873717] [2021-02-21 19:44:52,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:44:52,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:44:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:44:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:44:52,261 INFO L87 Difference]: Start difference. First operand 517 states and 575 transitions. Second operand 14 states. [2021-02-21 19:44:52,937 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:53,315 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:53,612 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:53,919 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:54,239 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:54,538 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:55,246 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:44:56,609 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:57,002 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:57,590 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:57,965 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:44:58,287 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:44:58,607 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:44:58,925 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:44:59,250 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:44:59,554 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:44:59,984 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:45:00,393 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:45:00,749 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:45:01,214 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:45:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:45:03,519 INFO L93 Difference]: Finished difference Result 1817 states and 2236 transitions. [2021-02-21 19:45:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:45:03,520 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:45:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:45:03,531 INFO L225 Difference]: With dead ends: 1817 [2021-02-21 19:45:03,531 INFO L226 Difference]: Without dead ends: 1415 [2021-02-21 19:45:03,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:45:03,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-02-21 19:45:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1276. [2021-02-21 19:45:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2021-02-21 19:45:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1488 transitions. [2021-02-21 19:45:04,304 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1488 transitions. Word has length 166 [2021-02-21 19:45:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:45:04,306 INFO L480 AbstractCegarLoop]: Abstraction has 1276 states and 1488 transitions. [2021-02-21 19:45:04,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:45:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1488 transitions. [2021-02-21 19:45:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:45:04,311 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:45:04,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:45:04,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:45:04,312 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:45:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:45:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2017136097, now seen corresponding path program 1 times [2021-02-21 19:45:04,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:45:04,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097314525] [2021-02-21 19:45:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:45:04,316 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:45:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,623 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:45:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:45:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:45:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:45:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:45:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:45:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:45:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:45:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:45:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:45:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:45:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:45:04,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:45:04,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:45:04,814 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 19:45:04,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097314525] [2021-02-21 19:45:04,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:45:04,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:45:04,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850543945] [2021-02-21 19:45:04,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:45:04,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:45:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:45:04,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:45:04,820 INFO L87 Difference]: Start difference. First operand 1276 states and 1488 transitions. Second operand 6 states. [2021-02-21 19:45:05,384 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:45:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:45:07,994 INFO L93 Difference]: Finished difference Result 2877 states and 3547 transitions. [2021-02-21 19:45:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:45:07,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:45:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:45:08,006 INFO L225 Difference]: With dead ends: 2877 [2021-02-21 19:45:08,006 INFO L226 Difference]: Without dead ends: 1716 [2021-02-21 19:45:08,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:45:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-02-21 19:45:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1593. [2021-02-21 19:45:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2021-02-21 19:45:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1859 transitions. [2021-02-21 19:45:08,677 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1859 transitions. Word has length 171 [2021-02-21 19:45:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:45:08,678 INFO L480 AbstractCegarLoop]: Abstraction has 1593 states and 1859 transitions. [2021-02-21 19:45:08,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:45:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1859 transitions. [2021-02-21 19:45:08,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:45:08,683 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:45:08,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:45:08,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:45:08,684 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:45:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:45:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash 276556344, now seen corresponding path program 1 times [2021-02-21 19:45:08,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:45:08,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451264012] [2021-02-21 19:45:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY