/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_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:29:42,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:29:42,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:29:42,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:29:42,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:29:42,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:29:42,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:29:42,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:29:42,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:29:42,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:29:42,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:29:42,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:29:42,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:29:42,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:29:42,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:29:42,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:29:42,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:29:42,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:29:42,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:29:42,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:29:42,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:29:42,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:29:42,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:29:42,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:29:42,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:29:42,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:29:42,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:29:42,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:29:42,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:29:42,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:29:42,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:29:42,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:29:42,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:29:42,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:29:42,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:29:42,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:29:42,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:29:42,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:29:42,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:29:42,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:29:42,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:29:42,389 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 16:29:42,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:29:42,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:29:42,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:29:42,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:29:42,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:29:42,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:29:42,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:29:42,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:29:42,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:29:42,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:29:42,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:29:42,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:29:42,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:29:42,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:29:42,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:29:42,408 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:29:42,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:29:42,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:29:42,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:29:42,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:29:42,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:29:42,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:29:42,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:29:42,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:29:42,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:29:42,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:29:42,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:29:42,811 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:29:42,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c [2021-02-23 16:29:42,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893058125/ea28cd4d40d247e191123ba7b87f4c4e/FLAG93200bc5f [2021-02-23 16:29:43,612 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:29:43,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c [2021-02-23 16:29:43,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893058125/ea28cd4d40d247e191123ba7b87f4c4e/FLAG93200bc5f [2021-02-23 16:29:43,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893058125/ea28cd4d40d247e191123ba7b87f4c4e [2021-02-23 16:29:43,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:29:43,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:29:43,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:29:43,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:29:43,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:29:43,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:29:43" (1/1) ... [2021-02-23 16:29:43,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5078dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:43, skipping insertion in model container [2021-02-23 16:29:43,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:29:43" (1/1) ... [2021-02-23 16:29:43,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:29:44,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:29:44,447 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_product08.cil.c[17065,17078] [2021-02-23 16:29:44,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:29:44,472 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:29:44,576 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_product08.cil.c[17065,17078] [2021-02-23 16:29:44,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:29:44,610 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:29:44,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44 WrapperNode [2021-02-23 16:29:44,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:29:44,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:29:44,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:29:44,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:29:44,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (1/1) ... [2021-02-23 16:29:44,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:29:44,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:29:44,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:29:44,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:29:44,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (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 16:29:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:29:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:29:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:29:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:29:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:29:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:29:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:29:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:29:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:29:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:29:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:29:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:29:44,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:29:44,848 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:29:44,848 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:29:44,848 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:29:44,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:29:44,848 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:29:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:29:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:29:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:29:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:29:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:29:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:29:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:29:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:29:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:29:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:29:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:29:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:29:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:29:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:29:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:29:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:29:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:29:44,852 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:29:44,852 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:29:44,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:29:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:29:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:29:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:29:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:29:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:29:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:29:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:29:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:29:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:29:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:29:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:29:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:29:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:29:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:29:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:29:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:29:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:29:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:29:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:29:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:29:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:29:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:29:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:29:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:29:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:29:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:29:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:29:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:29:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:29:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:29:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:29:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:29:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:29:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:29:46,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:29:46,071 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:29:46,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:29:46 BoogieIcfgContainer [2021-02-23 16:29:46,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:29:46,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:29:46,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:29:46,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:29:46,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:29:43" (1/3) ... [2021-02-23 16:29:46,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349a6a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:29:46, skipping insertion in model container [2021-02-23 16:29:46,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:29:44" (2/3) ... [2021-02-23 16:29:46,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349a6a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:29:46, skipping insertion in model container [2021-02-23 16:29:46,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:29:46" (3/3) ... [2021-02-23 16:29:46,083 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product08.cil.c [2021-02-23 16:29:46,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:29:46,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:29:46,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:29:46,140 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:29:46,140 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:29:46,140 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:29:46,141 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:29:46,141 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:29:46,141 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:29:46,141 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:29:46,141 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:29:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-23 16:29:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:29:46,183 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:46,184 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 16:29:46,185 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash 391071876, now seen corresponding path program 1 times [2021-02-23 16:29:46,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:46,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040220599] [2021-02-23 16:29:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:46,282 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:46,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:46,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:46,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:46,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,140 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:29:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:29:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:47,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:47,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:47,346 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 16:29:47,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040220599] [2021-02-23 16:29:47,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:47,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:29:47,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647431108] [2021-02-23 16:29:47,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:29:47,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:47,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:29:47,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:29:47,371 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-23 16:29:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:29:48,892 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2021-02-23 16:29:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:29:48,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:29:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:29:48,923 INFO L225 Difference]: With dead ends: 430 [2021-02-23 16:29:48,923 INFO L226 Difference]: Without dead ends: 275 [2021-02-23 16:29:48,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:29:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-02-23 16:29:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 233. [2021-02-23 16:29:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-23 16:29:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2021-02-23 16:29:49,125 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 147 [2021-02-23 16:29:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:29:49,126 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2021-02-23 16:29:49,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:29:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2021-02-23 16:29:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:29:49,131 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:49,131 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 16:29:49,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:29:49,132 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2113348991, now seen corresponding path program 1 times [2021-02-23 16:29:49,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:49,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678054240] [2021-02-23 16:29:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:49,137 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:49,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,531 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:29:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:29:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:49,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:49,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:49,663 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 16:29:49,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678054240] [2021-02-23 16:29:49,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:49,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:29:49,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613344307] [2021-02-23 16:29:49,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:29:49,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:49,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:29:49,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:29:49,666 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand 4 states. [2021-02-23 16:29:50,400 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:29:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:29:51,272 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2021-02-23 16:29:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:29:51,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:29:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:29:51,278 INFO L225 Difference]: With dead ends: 336 [2021-02-23 16:29:51,278 INFO L226 Difference]: Without dead ends: 258 [2021-02-23 16:29:51,280 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 16:29:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-02-23 16:29:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 223. [2021-02-23 16:29:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:29:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2021-02-23 16:29:51,359 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 148 [2021-02-23 16:29:51,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:29:51,360 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2021-02-23 16:29:51,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:29:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2021-02-23 16:29:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:29:51,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:51,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:29:51,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:29:51,363 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:51,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:51,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1962158130, now seen corresponding path program 1 times [2021-02-23 16:29:51,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:51,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894547889] [2021-02-23 16:29:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:51,368 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:51,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:51,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:51,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,819 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:29:51,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:29:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:29:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:29:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:29:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:51,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:51,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:51,990 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 16:29:51,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894547889] [2021-02-23 16:29:51,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:51,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:29:51,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971333130] [2021-02-23 16:29:51,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:29:51,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:51,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:29:51,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:29:51,994 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand 10 states. [2021-02-23 16:29:52,699 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:29:53,098 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:29:53,503 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:29:53,883 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:54,241 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:29:54,581 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:29:55,613 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:29:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:29:57,687 INFO L93 Difference]: Finished difference Result 590 states and 688 transitions. [2021-02-23 16:29:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:29:57,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:29:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:29:57,697 INFO L225 Difference]: With dead ends: 590 [2021-02-23 16:29:57,697 INFO L226 Difference]: Without dead ends: 482 [2021-02-23 16:29:57,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:29:57,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-02-23 16:29:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 391. [2021-02-23 16:29:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2021-02-23 16:29:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 435 transitions. [2021-02-23 16:29:57,882 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 435 transitions. Word has length 161 [2021-02-23 16:29:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:29:57,883 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 435 transitions. [2021-02-23 16:29:57,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:29:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 435 transitions. [2021-02-23 16:29:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:29:57,886 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:29:57,886 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] [2021-02-23 16:29:57,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:29:57,886 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:29:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:29:57,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1212045073, now seen corresponding path program 1 times [2021-02-23 16:29:57,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:29:57,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50842719] [2021-02-23 16:29:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:29:57,891 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:29:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:57,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:57,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:57,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:57,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:57,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:57,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:57,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:57,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:58,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:58,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:58,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:58,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:58,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:58,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:29:58,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,358 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:29:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:29:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:29:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:29:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:29:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:29:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:29:58,461 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:29:58,462 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:29:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:29:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:29:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:29:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:58,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:29:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:29:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:29:58,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:29:58,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:29:58,591 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 16:29:58,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50842719] [2021-02-23 16:29:58,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:29:58,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:29:58,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503330253] [2021-02-23 16:29:58,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:29:58,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:29:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:29:58,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:29:58,594 INFO L87 Difference]: Start difference. First operand 391 states and 435 transitions. Second operand 14 states. [2021-02-23 16:29:59,236 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:29:59,729 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:30:00,072 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:30:00,469 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:00,805 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:01,171 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:01,959 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:30:03,178 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:03,605 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:04,074 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:04,483 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:30:04,845 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:05,218 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:30:05,632 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:30:05,996 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:06,361 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:06,824 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:07,295 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:30:07,661 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:08,131 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:09,782 INFO L93 Difference]: Finished difference Result 1295 states and 1594 transitions. [2021-02-23 16:30:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:30:09,783 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:30:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:09,792 INFO L225 Difference]: With dead ends: 1295 [2021-02-23 16:30:09,792 INFO L226 Difference]: Without dead ends: 1019 [2021-02-23 16:30:09,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:30:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-02-23 16:30:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 880. [2021-02-23 16:30:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2021-02-23 16:30:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1016 transitions. [2021-02-23 16:30:10,203 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1016 transitions. Word has length 166 [2021-02-23 16:30:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:10,204 INFO L480 AbstractCegarLoop]: Abstraction has 880 states and 1016 transitions. [2021-02-23 16:30:10,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:30:10,204 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1016 transitions. [2021-02-23 16:30:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:30:10,208 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:10,208 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] [2021-02-23 16:30:10,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:30:10,209 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:10,210 INFO L82 PathProgramCache]: Analyzing trace with hash -994416912, now seen corresponding path program 1 times [2021-02-23 16:30:10,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:10,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102355657] [2021-02-23 16:30:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:10,213 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,662 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:30:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:30:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:30:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:30:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,856 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 16:30:10,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102355657] [2021-02-23 16:30:10,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:10,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:30:10,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420454265] [2021-02-23 16:30:10,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:30:10,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:10,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:30:10,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:30:10,859 INFO L87 Difference]: Start difference. First operand 880 states and 1016 transitions. Second operand 6 states. [2021-02-23 16:30:11,443 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:12,718 INFO L93 Difference]: Finished difference Result 1523 states and 1836 transitions. [2021-02-23 16:30:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:30:12,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:30:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:12,724 INFO L225 Difference]: With dead ends: 1523 [2021-02-23 16:30:12,724 INFO L226 Difference]: Without dead ends: 758 [2021-02-23 16:30:12,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:30:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-02-23 16:30:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 655. [2021-02-23 16:30:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-23 16:30:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 714 transitions. [2021-02-23 16:30:13,070 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 714 transitions. Word has length 171 [2021-02-23 16:30:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:13,071 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 714 transitions. [2021-02-23 16:30:13,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:30:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 714 transitions. [2021-02-23 16:30:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:30:13,075 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:13,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:13,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:30:13,077 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:13,077 INFO L82 PathProgramCache]: Analyzing trace with hash 14602935, now seen corresponding path program 1 times [2021-02-23 16:30:13,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:13,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199166136] [2021-02-23 16:30:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY