/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_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:08:46,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:08:46,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:08:46,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:08:46,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:08:46,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:08:46,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:08:46,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:08:46,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:08:46,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:08:46,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:08:46,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:08:46,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:08:46,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:08:46,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:08:46,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:08:46,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:08:46,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:08:46,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:08:46,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:08:46,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:08:46,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:08:46,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:08:46,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:08:46,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:08:46,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:08:46,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:08:46,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:08:46,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:08:46,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:08:46,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:08:46,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:08:46,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:08:46,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:08:46,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:08:46,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:08:46,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:08:46,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:08:46,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:08:46,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:08:46,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:08:46,457 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 16:08:46,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:08:46,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:08:46,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:08:46,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:08:46,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:08:46,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:08:46,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:08:46,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:08:46,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:08:46,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:08:46,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:08:46,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:08:46,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:08:46,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:08:46,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:08:46,475 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:08:46,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:08:46,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:08:46,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:08:46,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:08:46,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:08:46,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:08:46,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:08:46,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:08:46,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:08:46,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:08:46,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:08:46,891 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:08:46,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2021-02-23 16:08:46,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e0d3fcb/87da43d79e40441a95554c1aebde2f5d/FLAGac0ba0b72 [2021-02-23 16:08:47,679 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:08:47,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2021-02-23 16:08:47,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e0d3fcb/87da43d79e40441a95554c1aebde2f5d/FLAGac0ba0b72 [2021-02-23 16:08:47,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e0d3fcb/87da43d79e40441a95554c1aebde2f5d [2021-02-23 16:08:47,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:08:47,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:08:47,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:08:47,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:08:47,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:08:47,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:08:47" (1/1) ... [2021-02-23 16:08:47,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a08503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:47, skipping insertion in model container [2021-02-23 16:08:47,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:08:47" (1/1) ... [2021-02-23 16:08:47,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:08:47,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:08:48,163 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_spec1_product35.cil.c[2740,2753] [2021-02-23 16:08:48,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:08:48,286 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:08:48,309 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_spec1_product35.cil.c[2740,2753] [2021-02-23 16:08:48,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:08:48,429 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:08:48,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48 WrapperNode [2021-02-23 16:08:48,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:08:48,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:08:48,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:08:48,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:08:48,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (1/1) ... [2021-02-23 16:08:48,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:08:48,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:08:48,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:08:48,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:08:48,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (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 16:08:48,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:08:48,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:08:48,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:08:48,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:08:48,665 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:08:48,665 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:08:48,665 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:08:48,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:08:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:08:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:08:48,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:08:48,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:08:48,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:08:48,667 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:08:48,668 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:08:48,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:08:48,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:08:48,668 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:08:48,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:08:48,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:08:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:08:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:08:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:08:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:08:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:08:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:08:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:08:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:08:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:08:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:08:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:08:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:08:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:08:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:08:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:08:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:08:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:08:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:08:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:08:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:08:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:08:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:08:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:08:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:08:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:08:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:08:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:08:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:08:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:08:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:08:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:08:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:08:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:08:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:08:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:08:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:08:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:08:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:08:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:08:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:08:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:08:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:08:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:08:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:08:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:08:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:08:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:08:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:08:50,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:08:50,193 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:08:50,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:08:50 BoogieIcfgContainer [2021-02-23 16:08:50,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:08:50,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:08:50,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:08:50,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:08:50,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:08:47" (1/3) ... [2021-02-23 16:08:50,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f286040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:08:50, skipping insertion in model container [2021-02-23 16:08:50,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:08:48" (2/3) ... [2021-02-23 16:08:50,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f286040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:08:50, skipping insertion in model container [2021-02-23 16:08:50,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:08:50" (3/3) ... [2021-02-23 16:08:50,205 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2021-02-23 16:08:50,212 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:08:50,218 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:08:50,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:08:50,271 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:08:50,271 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:08:50,271 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:08:50,272 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:08:50,272 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:08:50,273 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:08:50,273 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:08:50,274 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:08:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states. [2021-02-23 16:08:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:08:50,340 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:08:50,341 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 16:08:50,342 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:08:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:08:50,352 INFO L82 PathProgramCache]: Analyzing trace with hash 200773651, now seen corresponding path program 1 times [2021-02-23 16:08:50,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:08:50,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004577161] [2021-02-23 16:08:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:08:50,443 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:08:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:50,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:50,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:50,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:50,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,358 WARN L202 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:08:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:08:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:08:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:08:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:08:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:08:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:08:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:08:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:51,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:51,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:51,580 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 16:08:51,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004577161] [2021-02-23 16:08:51,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:08:51,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:08:51,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714260672] [2021-02-23 16:08:51,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:08:51,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:08:51,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:08:51,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:08:51,612 INFO L87 Difference]: Start difference. First operand 299 states. Second operand 3 states. [2021-02-23 16:08:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:08:53,185 INFO L93 Difference]: Finished difference Result 445 states and 530 transitions. [2021-02-23 16:08:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:08:53,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:08:53,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:08:53,203 INFO L225 Difference]: With dead ends: 445 [2021-02-23 16:08:53,204 INFO L226 Difference]: Without dead ends: 282 [2021-02-23 16:08:53,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:08:53,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-02-23 16:08:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 241. [2021-02-23 16:08:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2021-02-23 16:08:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 260 transitions. [2021-02-23 16:08:53,376 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 260 transitions. Word has length 147 [2021-02-23 16:08:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:08:53,377 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 260 transitions. [2021-02-23 16:08:53,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:08:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 260 transitions. [2021-02-23 16:08:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:08:53,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:08:53,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:08:53,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:08:53,383 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:08:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:08:53,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1252453828, now seen corresponding path program 1 times [2021-02-23 16:08:53,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:08:53,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610919897] [2021-02-23 16:08:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:08:53,388 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:08:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:08:53,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,794 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:08:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:08:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:08:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:08:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:08:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:08:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:08:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:08:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:53,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:53,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:53,921 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 16:08:53,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610919897] [2021-02-23 16:08:53,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:08:53,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:08:53,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912982595] [2021-02-23 16:08:53,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:08:53,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:08:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:08:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:08:53,927 INFO L87 Difference]: Start difference. First operand 241 states and 260 transitions. Second operand 4 states. [2021-02-23 16:08:54,649 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:08:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:08:55,510 INFO L93 Difference]: Finished difference Result 352 states and 394 transitions. [2021-02-23 16:08:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:08:55,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:08:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:08:55,517 INFO L225 Difference]: With dead ends: 352 [2021-02-23 16:08:55,517 INFO L226 Difference]: Without dead ends: 265 [2021-02-23 16:08:55,520 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 16:08:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-02-23 16:08:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 231. [2021-02-23 16:08:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2021-02-23 16:08:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 247 transitions. [2021-02-23 16:08:55,614 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 247 transitions. Word has length 148 [2021-02-23 16:08:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:08:55,615 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 247 transitions. [2021-02-23 16:08:55,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:08:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 247 transitions. [2021-02-23 16:08:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:08:55,618 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:08:55,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:08:55,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:08:55,619 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:08:55,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:08:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1280243524, now seen corresponding path program 1 times [2021-02-23 16:08:55,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:08:55,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238996858] [2021-02-23 16:08:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:08:55,623 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:08:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:55,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:08:55,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:08:55,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:08:55,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:08:55,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:08:55,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:08:55,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:08:55,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:55,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,101 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:08:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:08:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:08:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:08:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:08:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:08:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:08:56,209 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:08:56,210 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:08:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:08:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:08:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:08:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:08:56,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:08:56,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:08:56,292 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 16:08:56,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238996858] [2021-02-23 16:08:56,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:08:56,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:08:56,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727676421] [2021-02-23 16:08:56,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:08:56,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:08:56,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:08:56,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:08:56,295 INFO L87 Difference]: Start difference. First operand 231 states and 247 transitions. Second operand 9 states. [2021-02-23 16:08:56,873 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:08:57,341 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:08:57,696 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:08:58,065 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:08:58,434 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:08:58,784 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:08:59,840 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:01,583 INFO L93 Difference]: Finished difference Result 590 states and 676 transitions. [2021-02-23 16:09:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:09:01,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:09:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:01,589 INFO L225 Difference]: With dead ends: 590 [2021-02-23 16:09:01,589 INFO L226 Difference]: Without dead ends: 474 [2021-02-23 16:09:01,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:09:01,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-02-23 16:09:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 399. [2021-02-23 16:09:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2021-02-23 16:09:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 441 transitions. [2021-02-23 16:09:01,795 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 441 transitions. Word has length 157 [2021-02-23 16:09:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:01,795 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 441 transitions. [2021-02-23 16:09:01,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:09:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 441 transitions. [2021-02-23 16:09:01,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:09:01,799 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:01,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:01,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:09:01,799 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:01,800 INFO L82 PathProgramCache]: Analyzing trace with hash -292891377, now seen corresponding path program 1 times [2021-02-23 16:09:01,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:01,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471100163] [2021-02-23 16:09:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:01,804 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:01,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:01,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:01,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:01,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:01,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:01,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:01,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:01,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:01,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:01,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:01,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:01,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,211 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:02,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:09:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:02,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:02,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:09:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:09:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:02,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:02,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:02,404 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 16:09:02,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471100163] [2021-02-23 16:09:02,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:02,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:09:02,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656517655] [2021-02-23 16:09:02,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:09:02,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:02,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:09:02,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:09:02,407 INFO L87 Difference]: Start difference. First operand 399 states and 441 transitions. Second operand 6 states. [2021-02-23 16:09:03,035 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:04,734 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:05,326 INFO L93 Difference]: Finished difference Result 989 states and 1162 transitions. [2021-02-23 16:09:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:09:05,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-23 16:09:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:05,335 INFO L225 Difference]: With dead ends: 989 [2021-02-23 16:09:05,335 INFO L226 Difference]: Without dead ends: 705 [2021-02-23 16:09:05,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:09:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-02-23 16:09:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 589. [2021-02-23 16:09:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2021-02-23 16:09:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 651 transitions. [2021-02-23 16:09:05,598 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 651 transitions. Word has length 165 [2021-02-23 16:09:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:05,599 INFO L480 AbstractCegarLoop]: Abstraction has 589 states and 651 transitions. [2021-02-23 16:09:05,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:09:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 651 transitions. [2021-02-23 16:09:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:09:05,602 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:05,602 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 16:09:05,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:09:05,602 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:05,603 INFO L82 PathProgramCache]: Analyzing trace with hash 534534560, now seen corresponding path program 1 times [2021-02-23 16:09:05,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:05,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093653965] [2021-02-23 16:09:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:05,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:05,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:05,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:05,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:05,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:05,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:05,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:05,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:05,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,034 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:09:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:09:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:06,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:06,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:09:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:06,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:06,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:06,252 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 16:09:06,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093653965] [2021-02-23 16:09:06,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:06,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:09:06,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546701220] [2021-02-23 16:09:06,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:09:06,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:06,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:09:06,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:09:06,259 INFO L87 Difference]: Start difference. First operand 589 states and 651 transitions. Second operand 9 states. [2021-02-23 16:09:06,834 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:07,977 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:08,353 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:08,746 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:09,158 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:09,484 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:09,827 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:10,186 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:10,686 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:12,252 INFO L93 Difference]: Finished difference Result 1582 states and 1841 transitions. [2021-02-23 16:09:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:09:12,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-23 16:09:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:12,260 INFO L225 Difference]: With dead ends: 1582 [2021-02-23 16:09:12,260 INFO L226 Difference]: Without dead ends: 1108 [2021-02-23 16:09:12,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:09:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-02-23 16:09:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 980. [2021-02-23 16:09:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2021-02-23 16:09:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1091 transitions. [2021-02-23 16:09:12,708 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1091 transitions. Word has length 166 [2021-02-23 16:09:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:12,709 INFO L480 AbstractCegarLoop]: Abstraction has 980 states and 1091 transitions. [2021-02-23 16:09:12,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:09:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1091 transitions. [2021-02-23 16:09:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:09:12,712 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:12,712 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 16:09:12,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:09:12,713 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1986101350, now seen corresponding path program 1 times [2021-02-23 16:09:12,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:12,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716604697] [2021-02-23 16:09:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:12,716 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:12,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:12,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:12,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,084 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:09:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:09:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:09:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:13,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:13,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:13,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:13,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:13,247 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 16:09:13,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716604697] [2021-02-23 16:09:13,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:13,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:09:13,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815070407] [2021-02-23 16:09:13,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:09:13,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:13,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:09:13,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:13,250 INFO L87 Difference]: Start difference. First operand 980 states and 1091 transitions. Second operand 10 states. [2021-02-23 16:09:13,813 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:15,284 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:15,705 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:16,123 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:16,503 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:09:16,851 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:17,531 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:17,899 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:18,358 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:19,313 INFO L93 Difference]: Finished difference Result 1240 states and 1454 transitions. [2021-02-23 16:09:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:09:19,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-23 16:09:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:19,323 INFO L225 Difference]: With dead ends: 1240 [2021-02-23 16:09:19,323 INFO L226 Difference]: Without dead ends: 1237 [2021-02-23 16:09:19,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:09:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-02-23 16:09:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 980. [2021-02-23 16:09:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2021-02-23 16:09:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1088 transitions. [2021-02-23 16:09:19,864 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1088 transitions. Word has length 171 [2021-02-23 16:09:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:19,864 INFO L480 AbstractCegarLoop]: Abstraction has 980 states and 1088 transitions. [2021-02-23 16:09:19,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:09:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1088 transitions. [2021-02-23 16:09:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-02-23 16:09:19,868 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:19,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:19,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:09:19,869 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:19,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1674780570, now seen corresponding path program 1 times [2021-02-23 16:09:19,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:19,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856501356] [2021-02-23 16:09:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:19,873 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:19,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:19,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:19,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:19,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:19,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:19,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:19,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:19,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:19,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:19,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,212 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:20,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:20,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:20,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:20,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:20,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-23 16:09:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:09:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:20,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:20,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:20,435 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 16:09:20,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856501356] [2021-02-23 16:09:20,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:20,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:09:20,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16897305] [2021-02-23 16:09:20,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:09:20,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:20,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:09:20,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:09:20,438 INFO L87 Difference]: Start difference. First operand 980 states and 1088 transitions. Second operand 13 states. [2021-02-23 16:09:21,126 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:21,489 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:21,847 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:22,206 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:22,512 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:23,507 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:23,877 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:24,269 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:24,663 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:25,024 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:26,603 INFO L93 Difference]: Finished difference Result 2258 states and 2701 transitions. [2021-02-23 16:09:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:09:26,608 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2021-02-23 16:09:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:26,618 INFO L225 Difference]: With dead ends: 2258 [2021-02-23 16:09:26,618 INFO L226 Difference]: Without dead ends: 1393 [2021-02-23 16:09:26,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-23 16:09:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-02-23 16:09:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1004. [2021-02-23 16:09:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2021-02-23 16:09:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1112 transitions. [2021-02-23 16:09:27,050 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1112 transitions. Word has length 195 [2021-02-23 16:09:27,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:27,051 INFO L480 AbstractCegarLoop]: Abstraction has 1004 states and 1112 transitions. [2021-02-23 16:09:27,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:09:27,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1112 transitions. [2021-02-23 16:09:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-02-23 16:09:27,055 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:27,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:27,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:09:27,056 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:27,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:27,056 INFO L82 PathProgramCache]: Analyzing trace with hash -252539706, now seen corresponding path program 1 times [2021-02-23 16:09:27,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:27,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109240996] [2021-02-23 16:09:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:27,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,383 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:27,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:27,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:27,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:27,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:09:27,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-23 16:09:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:09:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:27,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:27,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:27,570 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 16:09:27,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109240996] [2021-02-23 16:09:27,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:27,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:09:27,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647517136] [2021-02-23 16:09:27,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:09:27,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:27,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:09:27,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:09:27,572 INFO L87 Difference]: Start difference. First operand 1004 states and 1112 transitions. Second operand 10 states. [2021-02-23 16:09:29,012 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:09:29,387 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:09:29,775 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:09:30,148 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:30,556 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:09:30,904 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:09:32,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:32,163 INFO L93 Difference]: Finished difference Result 2294 states and 2704 transitions. [2021-02-23 16:09:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:09:32,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2021-02-23 16:09:32,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:32,173 INFO L225 Difference]: With dead ends: 2294 [2021-02-23 16:09:32,173 INFO L226 Difference]: Without dead ends: 1405 [2021-02-23 16:09:32,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:09:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-02-23 16:09:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1036. [2021-02-23 16:09:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2021-02-23 16:09:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1144 transitions. [2021-02-23 16:09:32,691 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1144 transitions. Word has length 195 [2021-02-23 16:09:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:32,692 INFO L480 AbstractCegarLoop]: Abstraction has 1036 states and 1144 transitions. [2021-02-23 16:09:32,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:09:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1144 transitions. [2021-02-23 16:09:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-02-23 16:09:32,698 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:32,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:32,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:09:32,699 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:32,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:32,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1466431799, now seen corresponding path program 1 times [2021-02-23 16:09:32,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:32,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041750912] [2021-02-23 16:09:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:32,704 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:32,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:32,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:32,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:32,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,124 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:09:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:09:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:09:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:09:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:09:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:09:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:09:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:09:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:09:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:09:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:09:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:09:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:09:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:09:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-23 16:09:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-02-23 16:09:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:09:33,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:09:33,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:09:33,298 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 16:09:33,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041750912] [2021-02-23 16:09:33,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:09:33,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:09:33,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371739818] [2021-02-23 16:09:33,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:09:33,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:09:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:09:33,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:09:33,300 INFO L87 Difference]: Start difference. First operand 1036 states and 1144 transitions. Second operand 7 states. [2021-02-23 16:09:33,923 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:34,595 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:09:37,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:09:37,773 INFO L93 Difference]: Finished difference Result 3479 states and 4220 transitions. [2021-02-23 16:09:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:09:37,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2021-02-23 16:09:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:09:37,788 INFO L225 Difference]: With dead ends: 3479 [2021-02-23 16:09:37,788 INFO L226 Difference]: Without dead ends: 2558 [2021-02-23 16:09:37,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:09:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-02-23 16:09:38,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2080. [2021-02-23 16:09:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2080 states. [2021-02-23 16:09:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2360 transitions. [2021-02-23 16:09:38,778 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2360 transitions. Word has length 195 [2021-02-23 16:09:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:09:38,779 INFO L480 AbstractCegarLoop]: Abstraction has 2080 states and 2360 transitions. [2021-02-23 16:09:38,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:09:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2360 transitions. [2021-02-23 16:09:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 16:09:38,783 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:09:38,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:09:38,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:09:38,783 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:09:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:09:38,784 INFO L82 PathProgramCache]: Analyzing trace with hash 662885767, now seen corresponding path program 1 times [2021-02-23 16:09:38,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:09:38,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147222332] [2021-02-23 16:09:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:09:38,787 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:09:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:09:38,854 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:09:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:09:38,920 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:09:39,133 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:09:39,134 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:09:39,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 16:09:39,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:09:39 BoogieIcfgContainer [2021-02-23 16:09:39,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:09:39,160 INFO L168 Benchmark]: Toolchain (without parser) took 51246.59 ms. Allocated memory was 151.0 MB in the beginning and 846.2 MB in the end (delta: 695.2 MB). Free memory was 126.1 MB in the beginning and 444.7 MB in the end (delta: -318.7 MB). Peak memory consumption was 378.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:39,160 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:09:39,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:39,160 INFO L168 Benchmark]: Boogie Preprocessor took 112.53 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 100.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:39,161 INFO L168 Benchmark]: RCFGBuilder took 1651.49 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 100.5 MB in the beginning and 170.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:39,161 INFO L168 Benchmark]: TraceAbstraction took 48960.70 ms. Allocated memory was 195.0 MB in the beginning and 846.2 MB in the end (delta: 651.2 MB). Free memory was 169.9 MB in the beginning and 444.7 MB in the end (delta: -274.8 MB). Peak memory consumption was 376.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:09:39,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 503.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 112.53 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 100.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1651.49 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 100.5 MB in the beginning and 170.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48960.70 ms. Allocated memory was 195.0 MB in the beginning and 846.2 MB in the end (delta: 651.2 MB). Free memory was 169.9 MB in the beginning and 444.7 MB in the end (delta: -274.8 MB). Peak memory consumption was 376.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 147]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L252] int pumpRunning = 0; [L253] int systemActive = 1; [L457] int cleanupTimeShifts = 4; [L722] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int retValue_acc ; [L531] int tmp ; [L535] FCALL select_helpers() [L536] FCALL select_features() [L537] CALL, EXPR valid_product() [L448] int retValue_acc ; [L451] retValue_acc = 1 [L452] return (retValue_acc); [L537] RET, EXPR valid_product() [L537] tmp = valid_product() [L539] COND TRUE \read(tmp) [L541] FCALL setup() [L542] CALL runTest() [L524] CALL test() [L183] int splverifierCounter ; [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L187] int tmp___2 ; [L190] splverifierCounter = 0 [L192] COND TRUE 1 [L194] COND TRUE splverifierCounter < 4 [L200] tmp = __VERIFIER_nondet_int() [L202] COND TRUE \read(tmp) [L204] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L204] RET waterRise() [L210] tmp___0 = __VERIFIER_nondet_int() [L212] COND TRUE \read(tmp___0) [L214] CALL changeMethaneLevel() [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 [L214] RET changeMethaneLevel() [L220] tmp___2 = __VERIFIER_nondet_int() [L222] COND TRUE \read(tmp___2) [L237] CALL timeShift() [L259] COND FALSE !(\read(pumpRunning)) [L266] COND TRUE \read(systemActive) [L268] CALL processEnvironment() [L288] int tmp ; [L291] COND TRUE ! pumpRunning [L293] CALL, EXPR isHighWaterLevel() [L385] int retValue_acc ; [L386] int tmp ; [L387] int tmp___0 ; [L391] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L391] RET, EXPR isHighWaterSensorDry() [L391] tmp = isHighWaterSensorDry() [L393] COND FALSE !(\read(tmp)) [L396] tmp___0 = 1 [L398] retValue_acc = tmp___0 [L399] return (retValue_acc); [L293] RET, EXPR isHighWaterLevel() [L293] tmp = isHighWaterLevel() [L295] COND TRUE \read(tmp) [L297] CALL activatePump() [L316] pumpRunning = 1 [L297] RET activatePump() [L268] RET processEnvironment() [L274] CALL __utac_acc__Specification1_spec__1() [L154] int tmp ; [L155] int tmp___0 ; [L159] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L159] RET, EXPR isMethaneLevelCritical() [L159] tmp = isMethaneLevelCritical() [L161] COND TRUE \read(tmp) [L163] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L163] RET, EXPR isPumpRunning() [L163] tmp___0 = isPumpRunning() [L165] COND TRUE \read(tmp___0) [L167] CALL __automaton_fail() [L147] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 38.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2064 SDtfs, 3939 SDslu, 4002 SDs, 0 SdLazy, 7394 SolverSat, 1207 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 204 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2080occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 1887 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...