/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:03:24,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:03:24,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:03:24,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:03:24,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:03:24,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:03:24,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:03:24,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:03:24,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:03:24,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:03:24,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:03:24,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:03:24,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:03:24,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:03:24,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:03:24,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:03:24,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:03:24,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:03:24,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:03:24,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:03:24,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:03:24,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:03:24,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:03:24,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:03:24,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:03:24,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:03:24,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:03:24,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:03:24,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:03:24,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:03:24,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:03:24,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:03:24,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:03:24,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:03:24,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:03:24,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:03:24,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:03:24,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:03:24,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:03:24,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:03:24,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:03:24,776 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 [2019-11-06 22:03:24,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:03:24,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:03:24,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:03:24,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:03:24,812 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:03:24,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:03:24,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:03:24,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:03:24,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:03:24,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:03:24,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:03:24,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:03:24,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:03:24,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:03:24,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:03:24,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:03:24,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:03:24,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:03:24,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:03:24,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:03:24,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:03:24,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:03:24,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:03:24,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:03:24,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:03:24,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:03:24,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:03:24,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:03:24,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:03:25,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:03:25,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:03:25,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:03:25,160 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:03:25,160 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:03:25,161 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2019-11-06 22:03:25,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad5820ef/354e2afb04b340cc975151523914396a/FLAGc6f2b14a6 [2019-11-06 22:03:25,743 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:03:25,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2019-11-06 22:03:25,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad5820ef/354e2afb04b340cc975151523914396a/FLAGc6f2b14a6 [2019-11-06 22:03:26,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad5820ef/354e2afb04b340cc975151523914396a [2019-11-06 22:03:26,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:03:26,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:03:26,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:03:26,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:03:26,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:03:26,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb42e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26, skipping insertion in model container [2019-11-06 22:03:26,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,099 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:03:26,146 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:03:26,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:03:26,584 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:03:26,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:03:26,732 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:03:26,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26 WrapperNode [2019-11-06 22:03:26,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:03:26,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:03:26,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:03:26,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:03:26,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (1/1) ... [2019-11-06 22:03:26,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:03:26,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:03:26,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:03:26,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:03:26,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (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 [2019-11-06 22:03:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:03:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:03:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:03:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:03:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:03:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:03:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:03:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:03:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:03:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:03:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:03:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:03:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:03:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:03:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:03:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:03:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:03:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:03:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:03:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:03:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:03:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:03:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:03:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:03:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:03:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:03:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:03:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:03:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:03:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:03:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:03:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:03:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:03:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:03:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:03:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:03:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:03:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:03:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:03:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:03:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:03:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:03:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:03:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:03:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:03:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:03:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:03:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:03:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:03:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:03:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:03:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:03:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:03:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:03:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:03:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:03:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:03:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:03:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:03:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:03:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:03:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:03:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:03:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:03:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:03:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:03:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:03:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:03:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:03:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:03:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:03:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:03:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:03:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:03:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:03:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:03:27,969 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:03:27,970 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:03:27,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:27 BoogieIcfgContainer [2019-11-06 22:03:27,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:03:27,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:03:27,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:03:27,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:03:27,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:26" (1/3) ... [2019-11-06 22:03:27,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59823c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:27, skipping insertion in model container [2019-11-06 22:03:27,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:26" (2/3) ... [2019-11-06 22:03:27,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59823c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:27, skipping insertion in model container [2019-11-06 22:03:27,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:27" (3/3) ... [2019-11-06 22:03:27,979 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2019-11-06 22:03:27,989 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:03:27,998 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:03:28,009 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:03:28,036 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:03:28,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:03:28,036 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:03:28,036 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:03:28,037 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:03:28,037 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:03:28,037 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:03:28,037 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:03:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2019-11-06 22:03:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:03:28,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:28,071 INFO L410 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] [2019-11-06 22:03:28,073 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:28,079 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2019-11-06 22:03:28,088 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:28,089 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245343542] [2019-11-06 22:03:28,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,738 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:28,840 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245343542] [2019-11-06 22:03:28,841 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:28,844 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:03:28,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451286452] [2019-11-06 22:03:28,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:03:28,855 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:28,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:03:28,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:03:28,880 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2019-11-06 22:03:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:29,978 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2019-11-06 22:03:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:03:29,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:03:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:29,995 INFO L225 Difference]: With dead ends: 297 [2019-11-06 22:03:29,996 INFO L226 Difference]: Without dead ends: 160 [2019-11-06 22:03:30,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:03:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-06 22:03:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-11-06 22:03:30,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-06 22:03:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2019-11-06 22:03:30,124 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2019-11-06 22:03:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:30,125 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2019-11-06 22:03:30,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:03:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2019-11-06 22:03:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:03:30,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:30,132 INFO L410 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] [2019-11-06 22:03:30,132 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2019-11-06 22:03:30,133 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:30,133 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056578279] [2019-11-06 22:03:30,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,527 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:30,590 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056578279] [2019-11-06 22:03:30,590 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:30,590 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:03:30,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946262712] [2019-11-06 22:03:30,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:03:30,593 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:30,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:03:30,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:03:30,594 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2019-11-06 22:03:31,036 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:31,838 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2019-11-06 22:03:31,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:03:31,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:03:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:31,843 INFO L225 Difference]: With dead ends: 230 [2019-11-06 22:03:31,843 INFO L226 Difference]: Without dead ends: 144 [2019-11-06 22:03:31,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:03:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-06 22:03:31,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2019-11-06 22:03:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-06 22:03:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2019-11-06 22:03:31,887 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2019-11-06 22:03:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:31,888 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2019-11-06 22:03:31,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:03:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2019-11-06 22:03:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:03:31,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:31,900 INFO L410 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] [2019-11-06 22:03:31,901 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:31,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2019-11-06 22:03:31,901 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:31,902 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9923194] [2019-11-06 22:03:31,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,438 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:32,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9923194] [2019-11-06 22:03:32,506 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:32,506 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:03:32,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076673260] [2019-11-06 22:03:32,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:03:32,507 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:32,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:03:32,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:03:32,508 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2019-11-06 22:03:32,965 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:33,309 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:33,581 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:33,857 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:35,065 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2019-11-06 22:03:35,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:03:35,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 22:03:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:35,068 INFO L225 Difference]: With dead ends: 239 [2019-11-06 22:03:35,068 INFO L226 Difference]: Without dead ends: 144 [2019-11-06 22:03:35,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:03:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-06 22:03:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2019-11-06 22:03:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-06 22:03:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2019-11-06 22:03:35,130 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2019-11-06 22:03:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:35,130 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2019-11-06 22:03:35,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:03:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2019-11-06 22:03:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:03:35,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:35,133 INFO L410 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] [2019-11-06 22:03:35,133 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:35,134 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2019-11-06 22:03:35,134 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:35,135 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417891128] [2019-11-06 22:03:35,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,487 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:35,562 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417891128] [2019-11-06 22:03:35,562 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:35,562 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:03:35,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518278662] [2019-11-06 22:03:35,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:03:35,563 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:35,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:03:35,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:03:35,564 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2019-11-06 22:03:35,936 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:37,147 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:37,795 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2019-11-06 22:03:37,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:03:37,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-11-06 22:03:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:37,797 INFO L225 Difference]: With dead ends: 331 [2019-11-06 22:03:37,798 INFO L226 Difference]: Without dead ends: 236 [2019-11-06 22:03:37,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:03:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-11-06 22:03:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2019-11-06 22:03:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2019-11-06 22:03:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2019-11-06 22:03:37,838 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2019-11-06 22:03:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:37,838 INFO L462 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2019-11-06 22:03:37,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:03:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2019-11-06 22:03:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:03:37,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:37,840 INFO L410 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] [2019-11-06 22:03:37,840 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:37,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2019-11-06 22:03:37,841 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:37,841 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243388333] [2019-11-06 22:03:37,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,142 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:38,257 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243388333] [2019-11-06 22:03:38,257 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:03:38,257 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:03:38,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142351764] [2019-11-06 22:03:38,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:03:38,259 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:38,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:03:38,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:03:38,260 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2019-11-06 22:03:38,888 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:39,267 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:39,545 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:39,807 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:40,475 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:41,440 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:41,740 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:42,009 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:42,319 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:03:42,625 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:42,941 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:44,391 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:44,772 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:45,428 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2019-11-06 22:03:45,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:03:45,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2019-11-06 22:03:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:45,436 INFO L225 Difference]: With dead ends: 677 [2019-11-06 22:03:45,436 INFO L226 Difference]: Without dead ends: 506 [2019-11-06 22:03:45,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:03:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-11-06 22:03:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2019-11-06 22:03:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2019-11-06 22:03:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2019-11-06 22:03:45,559 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2019-11-06 22:03:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:45,559 INFO L462 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2019-11-06 22:03:45,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:03:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2019-11-06 22:03:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:03:45,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:45,563 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:45,563 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:45,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:45,564 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2019-11-06 22:03:45,564 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:45,564 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143716755] [2019-11-06 22:03:45,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,849 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:03:46,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143716755] [2019-11-06 22:03:46,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082079154] [2019-11-06 22:03:46,018 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 [2019-11-06 22:03:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:46,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-06 22:03:46,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:03:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:46,421 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:03:46,421 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-11-06 22:03:46,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955269714] [2019-11-06 22:03:46,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:03:46,422 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:46,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:03:46,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:03:46,423 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 8 states. [2019-11-06 22:03:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:47,999 INFO L93 Difference]: Finished difference Result 1148 states and 1506 transitions. [2019-11-06 22:03:47,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:03:47,999 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2019-11-06 22:03:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:48,005 INFO L225 Difference]: With dead ends: 1148 [2019-11-06 22:03:48,005 INFO L226 Difference]: Without dead ends: 824 [2019-11-06 22:03:48,007 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:03:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-11-06 22:03:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 753. [2019-11-06 22:03:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-11-06 22:03:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 930 transitions. [2019-11-06 22:03:48,171 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 930 transitions. Word has length 136 [2019-11-06 22:03:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:48,172 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 930 transitions. [2019-11-06 22:03:48,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:03:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 930 transitions. [2019-11-06 22:03:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 22:03:48,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:48,175 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:48,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:03:48,388 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:48,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:48,389 INFO L82 PathProgramCache]: Analyzing trace with hash -772272072, now seen corresponding path program 1 times [2019-11-06 22:03:48,389 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:48,389 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341276055] [2019-11-06 22:03:48,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,691 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:03:48,848 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341276055] [2019-11-06 22:03:48,848 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836774598] [2019-11-06 22:03:48,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:03:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:03:49,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:03:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:03:49,087 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:03:49,087 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-11-06 22:03:49,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736600193] [2019-11-06 22:03:49,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:03:49,088 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:49,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:03:49,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:03:49,089 INFO L87 Difference]: Start difference. First operand 753 states and 930 transitions. Second operand 6 states. [2019-11-06 22:03:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:49,254 INFO L93 Difference]: Finished difference Result 1502 states and 1896 transitions. [2019-11-06 22:03:49,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:03:49,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2019-11-06 22:03:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:49,260 INFO L225 Difference]: With dead ends: 1502 [2019-11-06 22:03:49,260 INFO L226 Difference]: Without dead ends: 773 [2019-11-06 22:03:49,263 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:03:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-11-06 22:03:49,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2019-11-06 22:03:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2019-11-06 22:03:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 954 transitions. [2019-11-06 22:03:49,404 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 954 transitions. Word has length 128 [2019-11-06 22:03:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:49,405 INFO L462 AbstractCegarLoop]: Abstraction has 773 states and 954 transitions. [2019-11-06 22:03:49,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:03:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 954 transitions. [2019-11-06 22:03:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 22:03:49,408 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:49,408 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:49,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:03:49,621 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:49,622 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2019-11-06 22:03:49,622 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:49,622 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534086649] [2019-11-06 22:03:49,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,948 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:03:50,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534086649] [2019-11-06 22:03:50,103 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799774995] [2019-11-06 22:03:50,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:03:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:50,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:03:50,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:03:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:03:50,441 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:03:50,442 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-11-06 22:03:50,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095458663] [2019-11-06 22:03:50,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:03:50,443 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:50,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:03:50,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:03:50,443 INFO L87 Difference]: Start difference. First operand 773 states and 954 transitions. Second operand 5 states. [2019-11-06 22:03:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:03:50,584 INFO L93 Difference]: Finished difference Result 1397 states and 1760 transitions. [2019-11-06 22:03:50,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:03:50,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-11-06 22:03:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:03:50,589 INFO L225 Difference]: With dead ends: 1397 [2019-11-06 22:03:50,589 INFO L226 Difference]: Without dead ends: 648 [2019-11-06 22:03:50,592 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:03:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-11-06 22:03:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-11-06 22:03:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-11-06 22:03:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 786 transitions. [2019-11-06 22:03:50,726 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 786 transitions. Word has length 128 [2019-11-06 22:03:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:03:50,726 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 786 transitions. [2019-11-06 22:03:50,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:03:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 786 transitions. [2019-11-06 22:03:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-06 22:03:50,728 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:03:50,728 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:03:50,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:03:50,934 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:03:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:03:50,934 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2019-11-06 22:03:50,935 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:03:50,935 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679337414] [2019-11-06 22:03:50,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:03:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,229 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:03:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 22:03:51,398 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679337414] [2019-11-06 22:03:51,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309107768] [2019-11-06 22:03:51,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:03:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:03:51,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:03:51,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:03:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:03:51,760 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:03:51,760 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-11-06 22:03:51,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517723020] [2019-11-06 22:03:51,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-06 22:03:51,761 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:03:51,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-06 22:03:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:03:51,762 INFO L87 Difference]: Start difference. First operand 648 states and 786 transitions. Second operand 17 states. [2019-11-06 22:03:52,543 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:53,362 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:03:54,459 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:54,766 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:55,098 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:55,590 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2019-11-06 22:03:55,920 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:03:56,197 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:03:56,864 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:03:57,189 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:03:57,492 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:03:57,888 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:03:58,627 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:03:58,920 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:03:59,180 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:03:59,470 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:00,826 INFO L93 Difference]: Finished difference Result 1318 states and 1694 transitions. [2019-11-06 22:04:00,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-06 22:04:00,827 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2019-11-06 22:04:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:00,832 INFO L225 Difference]: With dead ends: 1318 [2019-11-06 22:04:00,833 INFO L226 Difference]: Without dead ends: 753 [2019-11-06 22:04:00,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=431, Invalid=1461, Unknown=0, NotChecked=0, Total=1892 [2019-11-06 22:04:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-11-06 22:04:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 645. [2019-11-06 22:04:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-06 22:04:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 777 transitions. [2019-11-06 22:04:00,974 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 777 transitions. Word has length 132 [2019-11-06 22:04:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:00,978 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 777 transitions. [2019-11-06 22:04:00,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-06 22:04:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 777 transitions. [2019-11-06 22:04:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-06 22:04:00,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:00,982 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:01,188 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:01,188 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:01,188 INFO L82 PathProgramCache]: Analyzing trace with hash 637468809, now seen corresponding path program 1 times [2019-11-06 22:04:01,189 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:01,189 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009983857] [2019-11-06 22:04:01,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,482 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-11-06 22:04:01,638 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009983857] [2019-11-06 22:04:01,639 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544535710] [2019-11-06 22:04:01,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:04:01,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:02,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:04:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 79 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:04:02,175 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:02,175 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-06 22:04:02,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347629491] [2019-11-06 22:04:02,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-06 22:04:02,179 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:02,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-06 22:04:02,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:04:02,181 INFO L87 Difference]: Start difference. First operand 645 states and 777 transitions. Second operand 18 states. [2019-11-06 22:04:02,998 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186