/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_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:29:35,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:29:35,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:29:35,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:29:35,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:29:35,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:29:35,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:29:35,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:29:35,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:29:35,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:29:35,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:29:35,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:29:35,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:29:35,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:29:35,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:29:35,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:29:35,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:29:35,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:29:35,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:29:35,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:29:35,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:29:35,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:29:35,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:29:35,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:29:35,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:29:35,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:29:35,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:29:35,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:29:35,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:29:35,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:29:35,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:29:35,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:29:35,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:29:35,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:29:35,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:29:35,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:29:35,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:29:35,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:29:35,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:29:35,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:29:35,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:29:35,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:29:35,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:29:35,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:29:35,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:29:35,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:29:35,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:29:35,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:29:35,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:29:35,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:29:35,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:29:35,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:29:35,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:29:35,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:29:35,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:29:35,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:29:35,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:29:35,172 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:29:35,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:29:35,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:29:35,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:29:35,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:29:35,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:29:35,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:29:35,174 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:29:35,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:29:35,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:29:35,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:29:35,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:29:35,561 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:29:35,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2021-02-23 16:29:35,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f695792/0b12e30058f546edbe31cf2f463ea6c4/FLAGb06c0e2fb [2021-02-23 16:29:36,342 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:29:36,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2021-02-23 16:29:36,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f695792/0b12e30058f546edbe31cf2f463ea6c4/FLAGb06c0e2fb [2021-02-23 16:29:36,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f695792/0b12e30058f546edbe31cf2f463ea6c4 [2021-02-23 16:29:36,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:29:36,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:29:36,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:29:36,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:29:36,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:29:36,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:29:36" (1/1) ... [2021-02-23 16:29:36,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508ec21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:36, skipping insertion in model container [2021-02-23 16:29:36,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:29:36" (1/1) ... [2021-02-23 16:29:36,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:29:36,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:29:36,919 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_product07.cil.c[3026,3039] [2021-02-23 16:29:37,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:29:37,114 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:29:37,134 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_product07.cil.c[3026,3039] [2021-02-23 16:29:37,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:29:37,229 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:29:37,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37 WrapperNode [2021-02-23 16:29:37,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:29:37,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:29:37,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:29:37,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:29:37,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... [2021-02-23 16:29:37,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:29:37,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:29:37,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:29:37,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:29:37,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:29:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:29:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:29:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:29:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:29:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:29:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:29:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:29:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:29:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:29:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:29:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:29:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:29:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:29:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:29:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:29:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:29:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:29:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:29:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:29:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:29:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:29:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:29:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:29:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:29:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:29:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:29:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:29:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:29:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:29:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:29:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:29:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:29:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:29:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:29:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:29:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:29:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:29:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:29:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:29:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:29:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:29:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:29:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:29:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:29:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:29:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:29:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:29:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:29:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:29:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:29:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:29:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:29:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:29:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:29:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:29:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:29:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:29:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:29:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:29:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:29:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:29:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:29:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:29:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:29:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:29:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:29:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:29:38,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:29:38,861 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:29:38,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:29:38 BoogieIcfgContainer [2021-02-23 16:29:38,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:29:38,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:29:38,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:29:38,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:29:38,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:29:36" (1/3) ... [2021-02-23 16:29:38,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597e86dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:29:38, skipping insertion in model container [2021-02-23 16:29:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:37" (2/3) ... [2021-02-23 16:29:38,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597e86dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:29:38, skipping insertion in model container [2021-02-23 16:29:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:29:38" (3/3) ... [2021-02-23 16:29:38,873 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product07.cil.c [2021-02-23 16:29:38,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:29:38,886 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:29:38,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:29:38,929 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:29:38,930 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:29:38,930 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:29:38,930 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:29:38,930 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:29:38,930 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:29:38,930 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:29:38,931 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:29:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2021-02-23 16:29:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:29:38,973 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:38,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:29:38,975 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:38,982 INFO L82 PathProgramCache]: Analyzing trace with hash -667264421, now seen corresponding path program 1 times [2021-02-23 16:29:38,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:38,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651590577] [2021-02-23 16:29:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:39,073 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,746 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:29:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:29:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:39,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:39,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:29:39,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651590577] [2021-02-23 16:29:39,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:39,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:29:39,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218606918] [2021-02-23 16:29:39,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:29:39,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:39,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:29:39,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:29:39,964 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2021-02-23 16:29:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:29:41,495 INFO L93 Difference]: Finished difference Result 421 states and 504 transitions. [2021-02-23 16:29:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:29:41,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:29:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:29:41,515 INFO L225 Difference]: With dead ends: 421 [2021-02-23 16:29:41,516 INFO L226 Difference]: Without dead ends: 270 [2021-02-23 16:29:41,521 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 [2021-02-23 16:29:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-23 16:29:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 229. [2021-02-23 16:29:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:29:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-23 16:29:41,682 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 147 [2021-02-23 16:29:41,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:29:41,683 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-23 16:29:41,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:29:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-23 16:29:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:29:41,687 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:41,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:29:41,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:29:41,688 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2081162594, now seen corresponding path program 1 times [2021-02-23 16:29:41,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:41,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55013961] [2021-02-23 16:29:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:41,701 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:41,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:41,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:41,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:41,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:41,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:41,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,190 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:29:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:29:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:42,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:42,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:29:42,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55013961] [2021-02-23 16:29:42,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:42,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:29:42,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29403247] [2021-02-23 16:29:42,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:29:42,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:42,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:29:42,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:29:42,407 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-23 16:29:43,177 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:29:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:29:44,072 INFO L93 Difference]: Finished difference Result 331 states and 370 transitions. [2021-02-23 16:29:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:29:44,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:29:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:29:44,077 INFO L225 Difference]: With dead ends: 331 [2021-02-23 16:29:44,077 INFO L226 Difference]: Without dead ends: 253 [2021-02-23 16:29:44,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:29:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-23 16:29:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2021-02-23 16:29:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:29:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-23 16:29:44,217 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 148 [2021-02-23 16:29:44,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:29:44,218 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-23 16:29:44,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:29:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-23 16:29:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:29:44,221 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:44,222 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] [2021-02-23 16:29:44,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:29:44,222 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:44,223 INFO L82 PathProgramCache]: Analyzing trace with hash 914511726, now seen corresponding path program 1 times [2021-02-23 16:29:44,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:44,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456493037] [2021-02-23 16:29:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:44,227 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:44,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:44,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:44,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:44,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:44,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:44,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:44,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,682 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:29:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:29:44,793 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:29:44,794 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:29:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:29:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:29:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:44,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:44,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:29:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456493037] [2021-02-23 16:29:44,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:44,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:29:44,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551798806] [2021-02-23 16:29:44,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:29:44,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:44,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:29:44,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:29:44,863 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-23 16:29:45,461 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:29:45,909 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:29:46,280 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:29:46,674 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:47,029 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:29:47,389 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:48,513 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:29:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:29:50,234 INFO L93 Difference]: Finished difference Result 554 states and 637 transitions. [2021-02-23 16:29:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:29:50,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:29:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:29:50,240 INFO L225 Difference]: With dead ends: 554 [2021-02-23 16:29:50,240 INFO L226 Difference]: Without dead ends: 450 [2021-02-23 16:29:50,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:29:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-02-23 16:29:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 387. [2021-02-23 16:29:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-23 16:29:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 431 transitions. [2021-02-23 16:29:50,424 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 431 transitions. Word has length 157 [2021-02-23 16:29:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:29:50,425 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 431 transitions. [2021-02-23 16:29:50,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:29:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 431 transitions. [2021-02-23 16:29:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:29:50,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:50,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:29:50,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:29:50,429 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1215287233, now seen corresponding path program 1 times [2021-02-23 16:29:50,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:50,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642415070] [2021-02-23 16:29:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:50,433 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:50,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:50,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:50,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:50,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:50,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:50,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:50,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:50,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:50,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:50,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,844 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:29:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:29:50,948 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:29:50,949 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:29:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:29:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:29:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:50,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:50,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:50,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:29:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:51,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:29:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:29:51,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642415070] [2021-02-23 16:29:51,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:51,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:29:51,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786683875] [2021-02-23 16:29:51,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:29:51,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:51,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:29:51,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:29:51,195 INFO L87 Difference]: Start difference. First operand 387 states and 431 transitions. Second operand 14 states. [2021-02-23 16:29:51,997 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:29:52,482 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:29:52,849 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:29:53,230 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:53,582 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:29:53,950 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:54,728 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:29:56,058 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:56,455 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:29:56,934 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:29:57,365 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:29:57,746 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:29:58,148 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:29:58,558 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:29:58,956 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:59,355 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:29:59,819 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:00,350 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:30:00,768 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:01,236 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:02,894 INFO L93 Difference]: Finished difference Result 1413 states and 1806 transitions. [2021-02-23 16:30:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:30:02,894 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-23 16:30:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:02,905 INFO L225 Difference]: With dead ends: 1413 [2021-02-23 16:30:02,905 INFO L226 Difference]: Without dead ends: 1141 [2021-02-23 16:30:02,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:30:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-02-23 16:30:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 868. [2021-02-23 16:30:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2021-02-23 16:30:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1004 transitions. [2021-02-23 16:30:03,377 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1004 transitions. Word has length 165 [2021-02-23 16:30:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:03,378 INFO L480 AbstractCegarLoop]: Abstraction has 868 states and 1004 transitions. [2021-02-23 16:30:03,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:30:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1004 transitions. [2021-02-23 16:30:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:30:03,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:03,382 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] [2021-02-23 16:30:03,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:30:03,383 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2024195557, now seen corresponding path program 1 times [2021-02-23 16:30:03,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:03,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336544730] [2021-02-23 16:30:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:03,387 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:03,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:03,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:03,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:03,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:03,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,802 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:30:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:30:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:30:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:30:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:30:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:03,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:03,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:30:03,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336544730] [2021-02-23 16:30:03,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:03,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:30:03,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681816009] [2021-02-23 16:30:03,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:30:03,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:03,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:30:03,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:30:03,962 INFO L87 Difference]: Start difference. First operand 868 states and 1004 transitions. Second operand 6 states. [2021-02-23 16:30:04,581 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:05,570 INFO L93 Difference]: Finished difference Result 1430 states and 1706 transitions. [2021-02-23 16:30:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:30:05,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-23 16:30:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:05,576 INFO L225 Difference]: With dead ends: 1430 [2021-02-23 16:30:05,576 INFO L226 Difference]: Without dead ends: 677 [2021-02-23 16:30:05,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:30:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-02-23 16:30:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 643. [2021-02-23 16:30:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-02-23 16:30:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 702 transitions. [2021-02-23 16:30:05,940 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 702 transitions. Word has length 170 [2021-02-23 16:30:05,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:05,942 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 702 transitions. [2021-02-23 16:30:05,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:30:05,942 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 702 transitions. [2021-02-23 16:30:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:30:05,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:05,948 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] [2021-02-23 16:30:05,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:30:05,948 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash -645447655, now seen corresponding path program 1 times [2021-02-23 16:30:05,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:05,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888006149] [2021-02-23 16:30:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY