/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:38:40,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:38:40,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:38:40,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:38:40,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:38:40,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:38:40,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:38:40,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:38:40,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:38:40,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:38:40,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:38:40,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:38:40,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:38:40,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:38:40,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:38:40,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:38:40,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:38:40,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:38:40,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:38:40,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:38:40,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:38:40,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:38:40,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:38:40,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:38:40,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:38:40,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:38:40,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:38:40,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:38:40,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:38:40,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:38:40,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:38:40,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:38:40,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:38:40,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:38:40,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:38:40,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:38:40,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:38:40,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:38:40,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:38:40,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:38:40,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:38:40,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:38:40,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:38:40,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:38:40,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:38:40,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:38:40,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:38:40,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:38:40,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:38:40,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:38:40,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:38:40,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:38:40,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:38:40,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:38:40,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:38:40,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:38:40,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:38:40,760 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:38:40,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:38:40,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:38:40,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:38:40,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:38:40,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:38:40,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:38:40,762 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:38:41,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:38:41,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:38:41,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:38:41,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:38:41,089 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:38:41,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-07-07 12:38:41,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b008872/07141809f5df439685879e4945bebd1a/FLAG1a949c93e [2020-07-07 12:38:41,701 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:38:41,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-07-07 12:38:41,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b008872/07141809f5df439685879e4945bebd1a/FLAG1a949c93e [2020-07-07 12:38:41,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b008872/07141809f5df439685879e4945bebd1a [2020-07-07 12:38:41,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:38:41,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:38:41,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:38:41,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:38:41,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:38:41,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:38:41" (1/1) ... [2020-07-07 12:38:41,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47941ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:41, skipping insertion in model container [2020-07-07 12:38:41,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:38:41" (1/1) ... [2020-07-07 12:38:41,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:38:42,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:38:42,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:38:42,543 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:38:42,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:38:42,654 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:38:42,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42 WrapperNode [2020-07-07 12:38:42,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:38:42,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:38:42,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:38:42,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:38:42,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (1/1) ... [2020-07-07 12:38:42,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:38:42,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:38:42,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:38:42,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:38:42,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (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 [2020-07-07 12:38:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:38:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:38:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:38:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:38:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:38:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:38:42,809 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:38:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:38:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:38:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:38:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:38:42,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:38:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:38:42,811 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:38:42,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:38:42,812 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:38:42,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:38:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:38:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:38:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:38:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:38:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:38:42,815 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:38:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:38:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:38:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:38:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:38:42,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:38:42,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:38:42,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:38:42,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:38:42,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:38:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:38:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:38:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:38:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:38:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:38:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:38:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:38:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:38:42,819 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:38:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:38:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:38:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:38:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:38:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:38:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:38:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:38:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:38:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:38:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:38:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:38:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:38:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:38:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:38:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:38:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:38:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:38:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:38:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:38:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:38:42,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:38:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:38:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:38:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:38:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:38:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:38:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:38:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:38:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:38:42,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:38:42,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:38:43,965 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:38:43,966 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:38:43,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:38:43 BoogieIcfgContainer [2020-07-07 12:38:43,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:38:43,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:38:43,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:38:43,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:38:43,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:38:41" (1/3) ... [2020-07-07 12:38:43,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b06ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:38:43, skipping insertion in model container [2020-07-07 12:38:43,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:42" (2/3) ... [2020-07-07 12:38:43,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b06ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:38:43, skipping insertion in model container [2020-07-07 12:38:43,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:38:43" (3/3) ... [2020-07-07 12:38:43,984 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-07-07 12:38:43,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:38:44,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:38:44,013 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:38:44,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:38:44,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:38:44,035 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:38:44,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:38:44,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:38:44,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:38:44,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:38:44,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:38:44,055 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-07-07 12:38:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:38:44,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:44,078 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] [2020-07-07 12:38:44,078 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:44,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1997357688, now seen corresponding path program 1 times [2020-07-07 12:38:44,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:44,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568520073] [2020-07-07 12:38:44,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:44,802 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:45,051 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:45,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568520073] [2020-07-07 12:38:45,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:45,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:38:45,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924980077] [2020-07-07 12:38:45,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:38:45,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:38:45,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:38:45,080 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-07-07 12:38:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:46,440 INFO L93 Difference]: Finished difference Result 477 states and 566 transitions. [2020-07-07 12:38:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:38:46,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:38:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:46,460 INFO L225 Difference]: With dead ends: 477 [2020-07-07 12:38:46,460 INFO L226 Difference]: Without dead ends: 296 [2020-07-07 12:38:46,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:38:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-07-07 12:38:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-07-07 12:38:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-07-07 12:38:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 276 transitions. [2020-07-07 12:38:46,612 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 276 transitions. Word has length 142 [2020-07-07 12:38:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:46,613 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 276 transitions. [2020-07-07 12:38:46,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:38:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 276 transitions. [2020-07-07 12:38:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:38:46,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:46,619 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] [2020-07-07 12:38:46,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:38:46,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:46,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:46,620 INFO L82 PathProgramCache]: Analyzing trace with hash -233302428, now seen corresponding path program 1 times [2020-07-07 12:38:46,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:46,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610360677] [2020-07-07 12:38:46,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,000 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:47,069 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:47,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610360677] [2020-07-07 12:38:47,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:47,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:38:47,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606489644] [2020-07-07 12:38:47,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:38:47,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:47,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:38:47,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:38:47,073 INFO L87 Difference]: Start difference. First operand 255 states and 276 transitions. Second operand 4 states. [2020-07-07 12:38:47,709 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:38:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:48,594 INFO L93 Difference]: Finished difference Result 394 states and 441 transitions. [2020-07-07 12:38:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:38:48,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:38:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:48,606 INFO L225 Difference]: With dead ends: 394 [2020-07-07 12:38:48,606 INFO L226 Difference]: Without dead ends: 279 [2020-07-07 12:38:48,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:38:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-07-07 12:38:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-07-07 12:38:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-07 12:38:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2020-07-07 12:38:48,713 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 143 [2020-07-07 12:38:48,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:48,714 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2020-07-07 12:38:48,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:38:48,714 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2020-07-07 12:38:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:38:48,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:48,718 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] [2020-07-07 12:38:48,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:38:48,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash -577490639, now seen corresponding path program 1 times [2020-07-07 12:38:48,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:48,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443968311] [2020-07-07 12:38:48,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,095 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:49,240 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:49,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443968311] [2020-07-07 12:38:49,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:49,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:38:49,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563108144] [2020-07-07 12:38:49,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:38:49,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:49,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:38:49,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:38:49,243 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 9 states. [2020-07-07 12:38:49,702 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:38:50,015 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:38:50,275 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:38:50,550 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:38:50,786 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:38:51,007 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:38:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:52,413 INFO L93 Difference]: Finished difference Result 414 states and 466 transitions. [2020-07-07 12:38:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 12:38:52,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:38:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:52,422 INFO L225 Difference]: With dead ends: 414 [2020-07-07 12:38:52,422 INFO L226 Difference]: Without dead ends: 279 [2020-07-07 12:38:52,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:38:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-07-07 12:38:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-07-07 12:38:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-07 12:38:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 262 transitions. [2020-07-07 12:38:52,498 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 262 transitions. Word has length 152 [2020-07-07 12:38:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:52,499 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 262 transitions. [2020-07-07 12:38:52,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:38:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 262 transitions. [2020-07-07 12:38:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-07 12:38:52,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:52,502 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] [2020-07-07 12:38:52,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:38:52,503 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:52,503 INFO L82 PathProgramCache]: Analyzing trace with hash 525505504, now seen corresponding path program 1 times [2020-07-07 12:38:52,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:52,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932041912] [2020-07-07 12:38:52,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,870 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:52,997 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:52,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932041912] [2020-07-07 12:38:52,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:52,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 12:38:52,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020235943] [2020-07-07 12:38:52,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 12:38:52,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:53,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 12:38:53,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 12:38:53,000 INFO L87 Difference]: Start difference. First operand 245 states and 262 transitions. Second operand 6 states. [2020-07-07 12:38:53,431 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:38:54,755 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:38:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:55,336 INFO L93 Difference]: Finished difference Result 545 states and 621 transitions. [2020-07-07 12:38:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 12:38:55,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-07-07 12:38:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:55,342 INFO L225 Difference]: With dead ends: 545 [2020-07-07 12:38:55,343 INFO L226 Difference]: Without dead ends: 410 [2020-07-07 12:38:55,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:38:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-07-07 12:38:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 351. [2020-07-07 12:38:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-07-07 12:38:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 377 transitions. [2020-07-07 12:38:55,510 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 377 transitions. Word has length 165 [2020-07-07 12:38:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:55,510 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 377 transitions. [2020-07-07 12:38:55,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 12:38:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 377 transitions. [2020-07-07 12:38:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-07 12:38:55,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:55,513 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] [2020-07-07 12:38:55,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:38:55,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:55,514 INFO L82 PathProgramCache]: Analyzing trace with hash -764606084, now seen corresponding path program 1 times [2020-07-07 12:38:55,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:55,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029301617] [2020-07-07 12:38:55,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,911 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:56,229 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:56,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029301617] [2020-07-07 12:38:56,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:56,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:38:56,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143589647] [2020-07-07 12:38:56,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:38:56,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:56,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:38:56,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:38:56,233 INFO L87 Difference]: Start difference. First operand 351 states and 377 transitions. Second operand 14 states. [2020-07-07 12:38:56,757 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:38:57,116 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:38:57,387 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:38:57,628 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:38:57,880 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:38:58,119 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:38:58,796 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:38:59,920 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:00,167 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:00,439 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:00,680 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:00,919 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:01,147 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:01,375 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:01,627 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:01,891 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:02,161 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:03,577 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:03,820 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:04,148 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:04,810 INFO L93 Difference]: Finished difference Result 1040 states and 1239 transitions. [2020-07-07 12:39:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 12:39:04,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2020-07-07 12:39:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:04,820 INFO L225 Difference]: With dead ends: 1040 [2020-07-07 12:39:04,820 INFO L226 Difference]: Without dead ends: 799 [2020-07-07 12:39:04,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:39:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-07-07 12:39:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 702. [2020-07-07 12:39:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-07-07 12:39:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 781 transitions. [2020-07-07 12:39:05,061 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 781 transitions. Word has length 189 [2020-07-07 12:39:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:05,062 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 781 transitions. [2020-07-07 12:39:05,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 781 transitions. [2020-07-07 12:39:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 12:39:05,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:05,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:05,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:39:05,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:05,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1870991617, now seen corresponding path program 1 times [2020-07-07 12:39:05,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:05,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188172840] [2020-07-07 12:39:05,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,505 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:06,037 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:06,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188172840] [2020-07-07 12:39:06,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:06,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:06,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067448051] [2020-07-07 12:39:06,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:06,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:06,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:06,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:06,043 INFO L87 Difference]: Start difference. First operand 702 states and 781 transitions. Second operand 14 states. [2020-07-07 12:39:06,736 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:07,471 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:08,207 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:08,477 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:08,762 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:09,049 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:09,317 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:09,584 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:09,836 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:10,108 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:10,351 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:10,624 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:10,939 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:11,213 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:13,051 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:13,283 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:13,525 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:39:13,751 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:14,007 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:14,225 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:14,798 INFO L93 Difference]: Finished difference Result 1370 states and 1617 transitions. [2020-07-07 12:39:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 12:39:14,799 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 265 [2020-07-07 12:39:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:14,804 INFO L225 Difference]: With dead ends: 1370 [2020-07-07 12:39:14,804 INFO L226 Difference]: Without dead ends: 778 [2020-07-07 12:39:14,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 12:39:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-07-07 12:39:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 669. [2020-07-07 12:39:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-07-07 12:39:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 747 transitions. [2020-07-07 12:39:14,996 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 747 transitions. Word has length 265 [2020-07-07 12:39:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:14,997 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 747 transitions. [2020-07-07 12:39:14,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 747 transitions. [2020-07-07 12:39:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-07-07 12:39:15,002 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:15,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:15,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:39:15,003 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash 815875063, now seen corresponding path program 1 times [2020-07-07 12:39:15,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:15,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965716303] [2020-07-07 12:39:15,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,304 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:15,662 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:15,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965716303] [2020-07-07 12:39:15,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:15,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:15,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303252695] [2020-07-07 12:39:15,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:15,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:15,667 INFO L87 Difference]: Start difference. First operand 669 states and 747 transitions. Second operand 14 states. [2020-07-07 12:39:16,201 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:16,446 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:16,677 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:16,903 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:17,123 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:17,875 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:18,096 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:18,322 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:18,563 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:18,784 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:20,088 INFO L93 Difference]: Finished difference Result 1161 states and 1335 transitions. [2020-07-07 12:39:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:39:20,089 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 256 [2020-07-07 12:39:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:20,094 INFO L225 Difference]: With dead ends: 1161 [2020-07-07 12:39:20,094 INFO L226 Difference]: Without dead ends: 602 [2020-07-07 12:39:20,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:39:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-07 12:39:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 560. [2020-07-07 12:39:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-07-07 12:39:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 621 transitions. [2020-07-07 12:39:20,324 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 621 transitions. Word has length 256 [2020-07-07 12:39:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:20,326 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 621 transitions. [2020-07-07 12:39:20,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 621 transitions. [2020-07-07 12:39:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-07-07 12:39:20,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:20,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:20,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:39:20,331 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -759668045, now seen corresponding path program 1 times [2020-07-07 12:39:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:20,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724807970] [2020-07-07 12:39:20,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,608 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:20,887 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:20,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724807970] [2020-07-07 12:39:20,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:20,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:20,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666434617] [2020-07-07 12:39:20,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:20,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:20,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:20,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:20,889 INFO L87 Difference]: Start difference. First operand 560 states and 621 transitions. Second operand 15 states. [2020-07-07 12:39:21,424 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:22,262 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:24,242 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:24,478 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:24,729 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:24,963 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:25,186 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:25,419 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:25,643 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:25,878 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:26,124 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:26,385 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:26,645 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:26,887 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:27,129 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:27,370 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:27,604 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:27,851 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:28,101 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:28,330 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:29,052 INFO L93 Difference]: Finished difference Result 1441 states and 1655 transitions. [2020-07-07 12:39:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 12:39:29,052 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 261 [2020-07-07 12:39:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:29,058 INFO L225 Difference]: With dead ends: 1441 [2020-07-07 12:39:29,059 INFO L226 Difference]: Without dead ends: 991 [2020-07-07 12:39:29,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 12:39:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2020-07-07 12:39:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 925. [2020-07-07 12:39:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-07-07 12:39:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1023 transitions. [2020-07-07 12:39:29,428 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1023 transitions. Word has length 261 [2020-07-07 12:39:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:29,428 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1023 transitions. [2020-07-07 12:39:29,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:39:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1023 transitions. [2020-07-07 12:39:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 12:39:29,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:29,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:29,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:39:29,433 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1409019518, now seen corresponding path program 1 times [2020-07-07 12:39:29,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:29,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038609085] [2020-07-07 12:39:29,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,748 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:29,980 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:29,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038609085] [2020-07-07 12:39:29,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:29,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 12:39:29,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144096392] [2020-07-07 12:39:29,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 12:39:29,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:29,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 12:39:29,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-07-07 12:39:29,982 INFO L87 Difference]: Start difference. First operand 925 states and 1023 transitions. Second operand 13 states. [2020-07-07 12:39:30,451 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:31,106 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:32,108 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:32,350 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:32,606 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:32,853 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:33,090 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:33,345 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:33,579 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:33,820 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:34,075 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:34,302 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:35,597 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:35,810 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:36,727 INFO L93 Difference]: Finished difference Result 2116 states and 2492 transitions. [2020-07-07 12:39:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 12:39:36,728 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 265 [2020-07-07 12:39:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:36,742 INFO L225 Difference]: With dead ends: 2116 [2020-07-07 12:39:36,743 INFO L226 Difference]: Without dead ends: 1471 [2020-07-07 12:39:36,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:39:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2020-07-07 12:39:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1225. [2020-07-07 12:39:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-07-07 12:39:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1372 transitions. [2020-07-07 12:39:37,128 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1372 transitions. Word has length 265 [2020-07-07 12:39:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:37,128 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1372 transitions. [2020-07-07 12:39:37,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 12:39:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1372 transitions. [2020-07-07 12:39:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-07 12:39:37,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:37,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:37,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:39:37,134 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash -502964723, now seen corresponding path program 2 times [2020-07-07 12:39:37,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:37,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308528176] [2020-07-07 12:39:37,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:39:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:39:37,857 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:37,858 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:39:37,858 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:39:37,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:39:37,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:39:37 BoogieIcfgContainer [2020-07-07 12:39:37,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:39:37,922 INFO L168 Benchmark]: Toolchain (without parser) took 55957.09 ms. Allocated memory was 140.5 MB in the beginning and 839.4 MB in the end (delta: 698.9 MB). Free memory was 101.7 MB in the beginning and 600.6 MB in the end (delta: -498.9 MB). Peak memory consumption was 199.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:37,926 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:39:37,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.88 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 173.8 MB in the end (delta: -72.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:37,934 INFO L168 Benchmark]: Boogie Preprocessor took 89.00 ms. Allocated memory is still 204.5 MB. Free memory was 173.8 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:37,936 INFO L168 Benchmark]: RCFGBuilder took 1231.77 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 177.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:37,938 INFO L168 Benchmark]: TraceAbstraction took 53941.75 ms. Allocated memory was 236.5 MB in the beginning and 839.4 MB in the end (delta: 602.9 MB). Free memory was 177.8 MB in the beginning and 600.6 MB in the end (delta: -422.8 MB). Peak memory consumption was 180.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:37,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.88 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 173.8 MB in the end (delta: -72.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.00 ms. Allocated memory is still 204.5 MB. Free memory was 173.8 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1231.77 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 177.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53941.75 ms. Allocated memory was 236.5 MB in the beginning and 839.4 MB in the end (delta: 602.9 MB). Free memory was 177.8 MB in the beginning and 600.6 MB in the end (delta: -422.8 MB). Peak memory consumption was 180.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; [L412] FCALL select_helpers() [L413] FCALL select_features() [L414] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L414] RET, EXPR valid_product() [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) [L418] FCALL setup() [L419] CALL runTest() [L401] CALL test() [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) [L104] CALL waterRise() [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 [L104] RET waterRise() [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND FALSE !(\read(pumpRunning)) [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND FALSE !(\read(pumpRunning)) [L236] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND TRUE ! pumpRunning [L197] CALL, EXPR isHighWaterLevel() [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR isHighWaterSensorDry() [L520] int retValue_acc ; [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); [L321] RET, EXPR isHighWaterSensorDry() [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); [L197] RET, EXPR isHighWaterLevel() [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L201] CALL activatePump() [L246] pumpRunning = 1 [L201] RET activatePump() [L236] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L910] CALL, EXPR isPumpRunning() [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); [L910] RET, EXPR isPumpRunning() [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) [L914] CALL __automaton_fail() [L434] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 45.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2345 SDtfs, 4735 SDslu, 5890 SDs, 0 SdLazy, 13106 SolverSat, 1541 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 300 SyntacticMatches, 7 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1225occurred 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: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 728 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...