/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_product10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:02:38,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:02:38,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:02:38,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:02:38,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:02:38,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:02:38,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:02:38,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:02:38,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:02:38,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:02:38,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:02:38,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:02:38,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:02:38,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:02:38,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:02:38,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:02:38,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:02:38,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:02:38,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:02:38,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:02:38,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:02:38,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:02:38,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:02:38,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:02:38,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:02:38,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:02:38,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:02:38,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:02:38,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:02:38,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:02:38,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:02:38,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:02:38,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:02:38,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:02:38,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:02:38,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:02:38,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:02:38,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:02:38,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:02:38,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:02:38,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:02:38,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:02:38,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:02:38,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:02:38,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:02:38,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:02:38,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:02:38,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:02:38,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:02:38,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:02:38,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:02:38,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:02:38,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:02:38,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:02:38,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:02:38,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:02:38,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:02:38,198 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:02:38,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:02:38,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:02:38,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:02:38,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:02:38,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:02:38,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:02:38,199 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:02:38,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:02:38,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:02:38,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:02:38,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:02:38,605 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:02:38,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product10.cil.c [2021-02-21 19:02:38,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c946548a/2272d30e7bb846408a8bb8c1887a46a2/FLAGe3e42ed89 [2021-02-21 19:02:39,385 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:02:39,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product10.cil.c [2021-02-21 19:02:39,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c946548a/2272d30e7bb846408a8bb8c1887a46a2/FLAGe3e42ed89 [2021-02-21 19:02:39,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c946548a/2272d30e7bb846408a8bb8c1887a46a2 [2021-02-21 19:02:39,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:02:39,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:02:39,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:02:39,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:02:39,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:02:39,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:02:39" (1/1) ... [2021-02-21 19:02:39,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b53496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:39, skipping insertion in model container [2021-02-21 19:02:39,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:02:39" (1/1) ... [2021-02-21 19:02:39,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:02:39,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:02:40,126 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_product10.cil.c[11394,11407] [2021-02-21 19:02:40,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:02:40,203 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:02:40,306 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_product10.cil.c[11394,11407] [2021-02-21 19:02:40,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:02:40,383 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:02:40,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40 WrapperNode [2021-02-21 19:02:40,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:02:40,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:02:40,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:02:40,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:02:40,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... [2021-02-21 19:02:40,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:02:40,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:02:40,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:02:40,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:02:40,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:02:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:02:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:02:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:02:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:02:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:02:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:02:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:02:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:02:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:02:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:02:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:02:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:02:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:02:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 19:02:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:02:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:02:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:02:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:02:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:02:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:02:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:02:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:02:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:02:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:02:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:02:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:02:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:02:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:02:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:02:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:02:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:02:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:02:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:02:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:02:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:02:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:02:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:02:41,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:02:41,716 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:02:41,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:02:41 BoogieIcfgContainer [2021-02-21 19:02:41,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:02:41,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:02:41,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:02:41,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:02:41,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:02:39" (1/3) ... [2021-02-21 19:02:41,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4879d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:02:41, skipping insertion in model container [2021-02-21 19:02:41,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:02:40" (2/3) ... [2021-02-21 19:02:41,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4879d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:02:41, skipping insertion in model container [2021-02-21 19:02:41,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:02:41" (3/3) ... [2021-02-21 19:02:41,728 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product10.cil.c [2021-02-21 19:02:41,734 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:02:41,740 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:02:41,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:02:41,783 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:02:41,784 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:02:41,784 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:02:41,784 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:02:41,784 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:02:41,784 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:02:41,784 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:02:41,785 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:02:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states. [2021-02-21 19:02:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:02:41,824 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:41,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:41,826 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash -804458709, now seen corresponding path program 1 times [2021-02-21 19:02:41,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:41,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824124473] [2021-02-21 19:02:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:41,920 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,610 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:02:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:02:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:42,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:42,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:42,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824124473] [2021-02-21 19:02:42,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:42,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:02:42,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522207613] [2021-02-21 19:02:42,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:02:42,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:02:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:02:42,832 INFO L87 Difference]: Start difference. First operand 251 states. Second operand 3 states. [2021-02-21 19:02:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:44,114 INFO L93 Difference]: Finished difference Result 358 states and 430 transitions. [2021-02-21 19:02:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:02:44,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:02:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:44,133 INFO L225 Difference]: With dead ends: 358 [2021-02-21 19:02:44,133 INFO L226 Difference]: Without dead ends: 237 [2021-02-21 19:02:44,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:02:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-02-21 19:02:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2021-02-21 19:02:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-21 19:02:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2021-02-21 19:02:44,256 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 147 [2021-02-21 19:02:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:44,257 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2021-02-21 19:02:44,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:02:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2021-02-21 19:02:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:02:44,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:44,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:44,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:02:44,262 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:44,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2084857258, now seen corresponding path program 1 times [2021-02-21 19:02:44,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:44,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955489154] [2021-02-21 19:02:44,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:44,268 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:44,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,772 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:02:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:02:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:44,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:44,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955489154] [2021-02-21 19:02:44,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:44,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:02:44,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801575052] [2021-02-21 19:02:44,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:02:44,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:02:44,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:02:44,884 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand 4 states. [2021-02-21 19:02:45,795 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:46,411 INFO L93 Difference]: Finished difference Result 270 states and 300 transitions. [2021-02-21 19:02:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:02:46,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:02:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:46,416 INFO L225 Difference]: With dead ends: 270 [2021-02-21 19:02:46,416 INFO L226 Difference]: Without dead ends: 220 [2021-02-21 19:02:46,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:02:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-02-21 19:02:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 189. [2021-02-21 19:02:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-02-21 19:02:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2021-02-21 19:02:46,489 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 148 [2021-02-21 19:02:46,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:46,490 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2021-02-21 19:02:46,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:02:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2021-02-21 19:02:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:02:46,493 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:46,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:02:46,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:02:46,494 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1575613923, now seen corresponding path program 1 times [2021-02-21 19:02:46,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:46,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619233162] [2021-02-21 19:02:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:46,500 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:46,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:46,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:46,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:46,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:46,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:46,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:46,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:46,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:46,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:46,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:46,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:46,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:46,973 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:47,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:02:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:47,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:02:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:02:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:47,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:47,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:47,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619233162] [2021-02-21 19:02:47,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:47,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:02:47,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000960681] [2021-02-21 19:02:47,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:02:47,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:47,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:02:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:02:47,209 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand 10 states. [2021-02-21 19:02:47,908 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:48,343 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:48,770 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:02:49,195 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:49,595 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:50,008 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:51,146 INFO L93 Difference]: Finished difference Result 316 states and 362 transitions. [2021-02-21 19:02:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:02:51,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:02:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:51,160 INFO L225 Difference]: With dead ends: 316 [2021-02-21 19:02:51,161 INFO L226 Difference]: Without dead ends: 242 [2021-02-21 19:02:51,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:02:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-02-21 19:02:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 189. [2021-02-21 19:02:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-02-21 19:02:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 198 transitions. [2021-02-21 19:02:51,266 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 198 transitions. Word has length 161 [2021-02-21 19:02:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:51,267 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 198 transitions. [2021-02-21 19:02:51,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:02:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 198 transitions. [2021-02-21 19:02:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-21 19:02:51,278 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:51,279 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] [2021-02-21 19:02:51,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:02:51,279 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash 69916811, now seen corresponding path program 1 times [2021-02-21 19:02:51,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:51,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758883721] [2021-02-21 19:02:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:51,285 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:51,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:51,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:51,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:51,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:51,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:51,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:51,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:51,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:51,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:02:51,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,832 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:02:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:51,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:02:51,954 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:02:51,957 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:02:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:51,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:51,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:02:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:52,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:52,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:02:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:52,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:52,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:52,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 19:02:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:52,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:52,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:52,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:52,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:52,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:52,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:02:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:52,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:52,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:02:52,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758883721] [2021-02-21 19:02:52,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:52,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:02:52,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325554180] [2021-02-21 19:02:52,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:02:52,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:52,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:02:52,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:02:52,152 INFO L87 Difference]: Start difference. First operand 189 states and 198 transitions. Second operand 14 states. [2021-02-21 19:02:52,868 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:53,345 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:53,746 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:02:54,143 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:54,539 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:54,924 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:55,738 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:02:56,654 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:57,071 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:57,529 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:57,921 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:02:58,281 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:58,677 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:02:59,068 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:02:59,455 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:59,825 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:00,246 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:00,707 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:03:01,104 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:03:01,528 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:03:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:03:02,540 INFO L93 Difference]: Finished difference Result 479 states and 573 transitions. [2021-02-21 19:03:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:03:02,541 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2021-02-21 19:03:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:03:02,545 INFO L225 Difference]: With dead ends: 479 [2021-02-21 19:03:02,546 INFO L226 Difference]: Without dead ends: 405 [2021-02-21 19:03:02,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:03:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-02-21 19:03:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 311. [2021-02-21 19:03:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-02-21 19:03:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 339 transitions. [2021-02-21 19:03:02,688 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 339 transitions. Word has length 164 [2021-02-21 19:03:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:03:02,689 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 339 transitions. [2021-02-21 19:03:02,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:03:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 339 transitions. [2021-02-21 19:03:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 19:03:02,691 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:03:02,692 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] [2021-02-21 19:03:02,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:03:02,692 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:03:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:03:02,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2054989522, now seen corresponding path program 1 times [2021-02-21 19:03:02,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:03:02,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256584555] [2021-02-21 19:03:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:03:02,696 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:03:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:02,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:02,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:02,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:02,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,044 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:03:03,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:03:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:03:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:03:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:03:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:03:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:03:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:03:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:03:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 19:03:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:03:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:03:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:03:03,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:03,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:03:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:03:03,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256584555] [2021-02-21 19:03:03,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:03:03,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:03:03,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970368186] [2021-02-21 19:03:03,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:03:03,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:03:03,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:03:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:03:03,237 INFO L87 Difference]: Start difference. First operand 311 states and 339 transitions. Second operand 6 states. [2021-02-21 19:03:03,885 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:03:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:03:04,799 INFO L93 Difference]: Finished difference Result 520 states and 604 transitions. [2021-02-21 19:03:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:03:04,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2021-02-21 19:03:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:03:04,807 INFO L225 Difference]: With dead ends: 520 [2021-02-21 19:03:04,808 INFO L226 Difference]: Without dead ends: 380 [2021-02-21 19:03:04,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:03:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-02-21 19:03:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 293. [2021-02-21 19:03:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-21 19:03:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 310 transitions. [2021-02-21 19:03:04,934 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 310 transitions. Word has length 169 [2021-02-21 19:03:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:03:04,934 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 310 transitions. [2021-02-21 19:03:04,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:03:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 310 transitions. [2021-02-21 19:03:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-21 19:03:04,938 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:03:04,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:03:04,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:03:04,939 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:03:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:03:04,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1048216975, now seen corresponding path program 1 times [2021-02-21 19:03:04,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:03:04,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711053198] [2021-02-21 19:03:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:03:05,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:03:05,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1