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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:35:37,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:35:37,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:35:37,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:35:37,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:35:37,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:35:37,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:35:37,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:35:37,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:35:37,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:35:37,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:35:37,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:35:37,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:35:37,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:35:37,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:35:37,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:35:37,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:35:37,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:35:37,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:35:37,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:35:37,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:35:37,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:35:37,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:35:37,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:35:37,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:35:37,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:35:37,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:35:37,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:35:37,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:35:37,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:35:37,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:35:37,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:35:37,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:35:37,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:35:37,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:35:37,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:35:37,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:35:37,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:35:37,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:35:37,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:35:37,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:35:37,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:35:37,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:35:37,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:35:37,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:35:37,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:35:37,812 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:35:37,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:35:37,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:35:37,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:35:37,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:35:37,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:35:37,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:35:37,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:35:37,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:35:37,814 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:35:37,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:35:37,815 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:35:37,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:35:37,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:35:37,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:35:37,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:35:37,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:35:37,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:37,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:35:37,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:35:37,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:35:37,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:35:37,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:35:37,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:35:37,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:35:38,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:35:38,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:35:38,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:35:38,162 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:35:38,163 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:35:38,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-10-14 23:35:38,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63799dee/ccb66778eb1545ccbade897b85989517/FLAGc66513480 [2019-10-14 23:35:38,769 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:35:38,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-10-14 23:35:38,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63799dee/ccb66778eb1545ccbade897b85989517/FLAGc66513480 [2019-10-14 23:35:39,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63799dee/ccb66778eb1545ccbade897b85989517 [2019-10-14 23:35:39,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:35:39,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:35:39,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:39,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:35:39,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:35:39,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411accdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39, skipping insertion in model container [2019-10-14 23:35:39,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,110 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:35:39,160 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:35:39,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:39,583 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:35:39,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:39,741 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:35:39,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39 WrapperNode [2019-10-14 23:35:39,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:39,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:35:39,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:35:39,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:35:39,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:35:39,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:35:39,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:35:39,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:35:39,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (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 [2019-10-14 23:35:39,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:35:39,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:35:39,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:39,932 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:35:39,932 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:35:39,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:35:39,933 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:35:39,933 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:35:39,934 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:35:39,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:35:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:35:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:35:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:35:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:35:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:35:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:35:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:35:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:35:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:35:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:35:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:35:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:35:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:35:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:35:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:35:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:35:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:35:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:35:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:35:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:35:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:35:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:35:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:35:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:35:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:35:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:35:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:35:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:35:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:35:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:35:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:35:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:35:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:35:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:35:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:35:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:35:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:35:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:35:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:35:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:35:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:35:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:35:39,950 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:35:39,950 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:35:39,950 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:35:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:35:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:35:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:35:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:35:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:35:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:35:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:35:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:35:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:35:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:35:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:35:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:35:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:35:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:35:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:35:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:35:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:35:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:35:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:35:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:35:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:35:39,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:35:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:35:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:35:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:35:41,125 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:35:41,126 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:35:41,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:41 BoogieIcfgContainer [2019-10-14 23:35:41,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:35:41,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:35:41,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:35:41,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:35:41,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:39" (1/3) ... [2019-10-14 23:35:41,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65e793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:41, skipping insertion in model container [2019-10-14 23:35:41,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (2/3) ... [2019-10-14 23:35:41,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65e793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:41, skipping insertion in model container [2019-10-14 23:35:41,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:41" (3/3) ... [2019-10-14 23:35:41,137 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2019-10-14 23:35:41,146 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:35:41,156 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:35:41,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:35:41,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:35:41,213 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:35:41,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:35:41,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:35:41,213 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:35:41,213 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:35:41,214 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:35:41,214 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:35:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-10-14 23:35:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:35:41,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:41,260 INFO L380 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] [2019-10-14 23:35:41,262 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:41,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2019-10-14 23:35:41,277 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:41,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992316598] [2019-10-14 23:35:41,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:41,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:41,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,025 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:42,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992316598] [2019-10-14 23:35:42,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:42,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:35:42,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953689451] [2019-10-14 23:35:42,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:35:42,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:42,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:35:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:42,167 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2019-10-14 23:35:43,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:43,310 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2019-10-14 23:35:43,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:35:43,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:35:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:43,327 INFO L225 Difference]: With dead ends: 306 [2019-10-14 23:35:43,327 INFO L226 Difference]: Without dead ends: 170 [2019-10-14 23:35:43,338 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-14 23:35:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2019-10-14 23:35:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-14 23:35:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-10-14 23:35:43,440 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2019-10-14 23:35:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:43,440 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-10-14 23:35:43,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:35:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-10-14 23:35:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:35:43,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:43,449 INFO L380 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] [2019-10-14 23:35:43,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:43,451 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2019-10-14 23:35:43,451 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:43,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402759035] [2019-10-14 23:35:43,451 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:43,451 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:43,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,804 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:43,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402759035] [2019-10-14 23:35:43,859 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:43,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:35:43,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296421981] [2019-10-14 23:35:43,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:35:43,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:35:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:35:43,862 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2019-10-14 23:35:44,318 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:45,353 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2019-10-14 23:35:45,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:35:45,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:35:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:45,357 INFO L225 Difference]: With dead ends: 247 [2019-10-14 23:35:45,357 INFO L226 Difference]: Without dead ends: 160 [2019-10-14 23:35:45,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:35:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-14 23:35:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-10-14 23:35:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-14 23:35:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2019-10-14 23:35:45,396 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2019-10-14 23:35:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:45,397 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2019-10-14 23:35:45,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:35:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2019-10-14 23:35:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:35:45,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:45,399 INFO L380 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] [2019-10-14 23:35:45,399 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:45,400 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2019-10-14 23:35:45,400 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:45,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222448605] [2019-10-14 23:35:45,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,746 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:45,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222448605] [2019-10-14 23:35:45,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:45,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:45,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206355969] [2019-10-14 23:35:45,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:45,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:45,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:45,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:45,853 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2019-10-14 23:35:46,201 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:46,572 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:46,867 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:47,125 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:48,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:48,480 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2019-10-14 23:35:48,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:35:48,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-14 23:35:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:48,483 INFO L225 Difference]: With dead ends: 260 [2019-10-14 23:35:48,483 INFO L226 Difference]: Without dead ends: 160 [2019-10-14 23:35:48,485 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:35:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-14 23:35:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-10-14 23:35:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-14 23:35:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2019-10-14 23:35:48,523 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2019-10-14 23:35:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:48,524 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2019-10-14 23:35:48,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2019-10-14 23:35:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:35:48,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:48,527 INFO L380 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] [2019-10-14 23:35:48,527 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2019-10-14 23:35:48,528 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:48,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345352893] [2019-10-14 23:35:48,528 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:48,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:48,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,843 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:48,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345352893] [2019-10-14 23:35:48,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:48,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:35:48,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102682770] [2019-10-14 23:35:48,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:35:48,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:35:48,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:35:48,952 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2019-10-14 23:35:49,349 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:50,663 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:51,453 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2019-10-14 23:35:51,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:35:51,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-10-14 23:35:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:51,457 INFO L225 Difference]: With dead ends: 359 [2019-10-14 23:35:51,458 INFO L226 Difference]: Without dead ends: 259 [2019-10-14 23:35:51,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:35:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-14 23:35:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2019-10-14 23:35:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-10-14 23:35:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2019-10-14 23:35:51,550 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2019-10-14 23:35:51,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:51,551 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2019-10-14 23:35:51,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:35:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2019-10-14 23:35:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:35:51,556 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:51,556 INFO L380 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] [2019-10-14 23:35:51,557 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:51,558 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2019-10-14 23:35:51,558 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:51,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049388577] [2019-10-14 23:35:51,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:51,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:51,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,949 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:52,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049388577] [2019-10-14 23:35:52,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:52,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:52,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189426115] [2019-10-14 23:35:52,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:52,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:52,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:52,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:52,052 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2019-10-14 23:35:52,463 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:53,844 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:54,152 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:54,422 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:54,666 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:55,994 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2019-10-14 23:35:56,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:35:56,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-10-14 23:35:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:56,013 INFO L225 Difference]: With dead ends: 626 [2019-10-14 23:35:56,013 INFO L226 Difference]: Without dead ends: 444 [2019-10-14 23:35:56,015 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:35:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-14 23:35:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2019-10-14 23:35:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2019-10-14 23:35:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2019-10-14 23:35:56,111 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2019-10-14 23:35:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:56,111 INFO L462 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2019-10-14 23:35:56,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2019-10-14 23:35:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:35:56,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:56,113 INFO L380 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] [2019-10-14 23:35:56,114 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:56,114 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2019-10-14 23:35:56,114 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:56,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502108900] [2019-10-14 23:35:56,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:56,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:56,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,414 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:56,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502108900] [2019-10-14 23:35:56,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:56,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:56,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402960009] [2019-10-14 23:35:56,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:56,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:56,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:56,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:56,584 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2019-10-14 23:35:57,095 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:58,420 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:58,720 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:58,999 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:59,274 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:00,320 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2019-10-14 23:36:00,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:00,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:36:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:00,326 INFO L225 Difference]: With dead ends: 822 [2019-10-14 23:36:00,326 INFO L226 Difference]: Without dead ends: 482 [2019-10-14 23:36:00,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:36:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-10-14 23:36:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2019-10-14 23:36:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2019-10-14 23:36:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2019-10-14 23:36:00,396 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2019-10-14 23:36:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:00,396 INFO L462 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2019-10-14 23:36:00,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2019-10-14 23:36:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:36:00,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:00,398 INFO L380 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] [2019-10-14 23:36:00,398 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2019-10-14 23:36:00,399 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:00,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095939492] [2019-10-14 23:36:00,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:00,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:00,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,656 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:00,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095939492] [2019-10-14 23:36:00,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:00,790 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:00,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525277555] [2019-10-14 23:36:00,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:00,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:00,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:00,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:00,792 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2019-10-14 23:36:01,941 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:02,231 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:02,514 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:02,782 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:03,973 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2019-10-14 23:36:03,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:03,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-14 23:36:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:03,983 INFO L225 Difference]: With dead ends: 825 [2019-10-14 23:36:03,983 INFO L226 Difference]: Without dead ends: 486 [2019-10-14 23:36:03,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-10-14 23:36:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2019-10-14 23:36:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2019-10-14 23:36:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2019-10-14 23:36:04,074 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2019-10-14 23:36:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:04,075 INFO L462 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2019-10-14 23:36:04,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2019-10-14 23:36:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:36:04,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:04,078 INFO L380 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] [2019-10-14 23:36:04,079 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:04,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2019-10-14 23:36:04,079 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:04,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795900970] [2019-10-14 23:36:04,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:04,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:04,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,362 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:04,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795900970] [2019-10-14 23:36:04,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:04,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:04,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617683023] [2019-10-14 23:36:04,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:04,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:04,502 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2019-10-14 23:36:05,098 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:05,356 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:05,634 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:06,436 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:06,726 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:06,999 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:08,448 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2019-10-14 23:36:08,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:08,449 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-14 23:36:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:08,453 INFO L225 Difference]: With dead ends: 849 [2019-10-14 23:36:08,453 INFO L226 Difference]: Without dead ends: 500 [2019-10-14 23:36:08,455 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-14 23:36:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2019-10-14 23:36:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-10-14 23:36:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2019-10-14 23:36:08,557 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2019-10-14 23:36:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:08,559 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2019-10-14 23:36:08,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2019-10-14 23:36:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:36:08,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:08,563 INFO L380 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] [2019-10-14 23:36:08,563 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2019-10-14 23:36:08,564 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:08,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631191639] [2019-10-14 23:36:08,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:08,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:08,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,853 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:08,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631191639] [2019-10-14 23:36:08,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:08,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:08,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679304553] [2019-10-14 23:36:08,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:08,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:08,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:08,978 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2019-10-14 23:36:09,325 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:09,888 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:12,399 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2019-10-14 23:36:12,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:12,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-14 23:36:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:12,405 INFO L225 Difference]: With dead ends: 1197 [2019-10-14 23:36:12,405 INFO L226 Difference]: Without dead ends: 840 [2019-10-14 23:36:12,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:36:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-14 23:36:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2019-10-14 23:36:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-14 23:36:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2019-10-14 23:36:12,593 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2019-10-14 23:36:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:12,594 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2019-10-14 23:36:12,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2019-10-14 23:36:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:36:12,597 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:12,597 INFO L380 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] [2019-10-14 23:36:12,598 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2019-10-14 23:36:12,598 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:12,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137730290] [2019-10-14 23:36:12,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:12,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:12,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,917 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:13,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137730290] [2019-10-14 23:36:13,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:13,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:13,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385561832] [2019-10-14 23:36:13,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:13,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:13,006 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2019-10-14 23:36:13,432 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:16,161 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2019-10-14 23:36:16,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-14 23:36:16,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-14 23:36:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:16,171 INFO L225 Difference]: With dead ends: 1377 [2019-10-14 23:36:16,171 INFO L226 Difference]: Without dead ends: 1374 [2019-10-14 23:36:16,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:36:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2019-10-14 23:36:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2019-10-14 23:36:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2019-10-14 23:36:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2019-10-14 23:36:16,411 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2019-10-14 23:36:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:16,411 INFO L462 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2019-10-14 23:36:16,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2019-10-14 23:36:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:36:16,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:16,417 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:36:16,418 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:16,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2019-10-14 23:36:16,418 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:16,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878472680] [2019-10-14 23:36:16,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:16,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:16,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,737 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 23:36:16,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878472680] [2019-10-14 23:36:16,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998412060] [2019-10-14 23:36:16,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true