java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:05:21,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:05:21,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:05:21,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:05:21,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:05:21,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:05:21,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:05:21,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:05:21,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:05:21,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:05:21,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:05:21,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:05:21,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:05:21,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:05:21,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:05:21,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:05:21,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:05:21,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:05:21,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:05:21,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:05:21,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:05:21,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:05:21,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:05:21,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:05:21,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:05:21,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:05:21,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:05:21,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:05:21,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:05:21,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:05:21,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:05:21,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:05:21,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:05:21,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:05:21,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:05:21,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:05:21,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:05:21,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:05:21,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:05:21,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:05:21,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:05:21,828 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 [2019-09-20 13:05:21,857 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:05:21,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:05:21,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:05:21,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:05:21,859 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:05:21,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:05:21,860 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:05:21,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:05:21,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:05:21,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:05:21,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:05:21,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:05:21,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:05:21,864 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:05:21,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:05:21,864 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:05:21,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:05:21,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:05:21,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:05:21,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:05:21,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:05:21,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:05:21,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:05:21,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:05:21,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:05:21,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:05:21,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:05:21,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:05:21,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:05:21,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:05:21,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:05:21,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:05:21,931 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:05:21,931 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:05:21,932 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-09-20 13:05:22,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c77af57/1e3077c10b624a519308c38999cf715a/FLAG5f828b12f [2019-09-20 13:05:22,603 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:05:22,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-09-20 13:05:22,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c77af57/1e3077c10b624a519308c38999cf715a/FLAG5f828b12f [2019-09-20 13:05:22,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c77af57/1e3077c10b624a519308c38999cf715a [2019-09-20 13:05:22,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:05:22,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:05:22,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:05:22,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:05:22,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:05:22,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:05:22" (1/1) ... [2019-09-20 13:05:22,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6157593b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:22, skipping insertion in model container [2019-09-20 13:05:22,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:05:22" (1/1) ... [2019-09-20 13:05:22,857 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:05:22,914 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:05:23,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:05:23,405 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:05:23,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:05:23,575 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:05:23,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23 WrapperNode [2019-09-20 13:05:23,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:05:23,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:05:23,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:05:23,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:05:23,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (1/1) ... [2019-09-20 13:05:23,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:05:23,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:05:23,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:05:23,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:05:23,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (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 [2019-09-20 13:05:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:05:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:05:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:05:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:05:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:05:23,725 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:05:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:05:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:05:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:05:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:05:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:05:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:05:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:05:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:05:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:05:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:05:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:05:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:05:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:05:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:05:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:05:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:05:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:05:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:05:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:05:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:05:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:05:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:05:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:05:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:05:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:05:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:05:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:05:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:05:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:05:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:05:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:05:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:05:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:05:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:05:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:05:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:05:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:05:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:05:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:05:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:05:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:05:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:05:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:05:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:05:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:05:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:05:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:05:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:05:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:05:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:05:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:05:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:05:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:05:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:05:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:05:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:05:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:05:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:05:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:05:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:05:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:05:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:05:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:05:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:05:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:05:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:05:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:05:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:05:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:05:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:05:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:05:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:05:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:05:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:05:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:05:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:05:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:05:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:05:23,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:05:24,968 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:05:24,968 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:05:24,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:05:24 BoogieIcfgContainer [2019-09-20 13:05:24,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:05:24,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:05:24,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:05:25,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:05:25,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:05:22" (1/3) ... [2019-09-20 13:05:25,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c97dcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:05:25, skipping insertion in model container [2019-09-20 13:05:25,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:23" (2/3) ... [2019-09-20 13:05:25,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c97dcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:05:25, skipping insertion in model container [2019-09-20 13:05:25,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:05:24" (3/3) ... [2019-09-20 13:05:25,006 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2019-09-20 13:05:25,016 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:05:25,025 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:05:25,043 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:05:25,075 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:05:25,075 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:05:25,075 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:05:25,075 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:05:25,076 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:05:25,076 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:05:25,076 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:05:25,076 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:05:25,076 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:05:25,103 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2019-09-20 13:05:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:05:25,114 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:25,115 INFO L407 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] [2019-09-20 13:05:25,118 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2013010426, now seen corresponding path program 1 times [2019-09-20 13:05:25,125 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:25,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:25,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:25,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:25,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:05:25,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:25,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:05:25,584 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:05:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:05:25,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:05:25,600 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 2 states. [2019-09-20 13:05:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:25,658 INFO L93 Difference]: Finished difference Result 298 states and 369 transitions. [2019-09-20 13:05:25,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:05:25,660 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:05:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:25,673 INFO L225 Difference]: With dead ends: 298 [2019-09-20 13:05:25,673 INFO L226 Difference]: Without dead ends: 151 [2019-09-20 13:05:25,678 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:05:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-20 13:05:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-20 13:05:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-20 13:05:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2019-09-20 13:05:25,738 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 51 [2019-09-20 13:05:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:25,738 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2019-09-20 13:05:25,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:05:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2019-09-20 13:05:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:05:25,743 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:25,743 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:25,744 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1660126963, now seen corresponding path program 1 times [2019-09-20 13:05:25,744 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:25,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:25,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:25,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:25,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:05:25,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:25,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:05:25,920 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:05:25,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:05:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:05:25,921 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 3 states. [2019-09-20 13:05:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:25,947 INFO L93 Difference]: Finished difference Result 241 states and 283 transitions. [2019-09-20 13:05:25,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:05:25,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:05:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:25,951 INFO L225 Difference]: With dead ends: 241 [2019-09-20 13:05:25,951 INFO L226 Difference]: Without dead ends: 142 [2019-09-20 13:05:25,953 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:05:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-09-20 13:05:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-09-20 13:05:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-09-20 13:05:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2019-09-20 13:05:25,970 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 52 [2019-09-20 13:05:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:25,971 INFO L475 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2019-09-20 13:05:25,971 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:05:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2019-09-20 13:05:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-20 13:05:25,974 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:25,974 INFO L407 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] [2019-09-20 13:05:25,974 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:25,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1605789181, now seen corresponding path program 1 times [2019-09-20 13:05:25,975 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:25,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:25,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:05:26,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:26,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:05:26,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:05:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:05:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:05:26,166 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 7 states. [2019-09-20 13:05:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:26,705 INFO L93 Difference]: Finished difference Result 421 states and 510 transitions. [2019-09-20 13:05:26,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:05:26,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-20 13:05:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:26,712 INFO L225 Difference]: With dead ends: 421 [2019-09-20 13:05:26,712 INFO L226 Difference]: Without dead ends: 307 [2019-09-20 13:05:26,714 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:05:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-09-20 13:05:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 299. [2019-09-20 13:05:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2019-09-20 13:05:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 362 transitions. [2019-09-20 13:05:26,820 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 362 transitions. Word has length 56 [2019-09-20 13:05:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:26,821 INFO L475 AbstractCegarLoop]: Abstraction has 299 states and 362 transitions. [2019-09-20 13:05:26,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:05:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 362 transitions. [2019-09-20 13:05:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-20 13:05:26,829 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:26,829 INFO L407 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] [2019-09-20 13:05:26,829 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1990007725, now seen corresponding path program 1 times [2019-09-20 13:05:26,830 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:26,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:26,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:26,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:26,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:05:26,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:26,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:05:26,982 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:05:26,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:05:26,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:05:26,982 INFO L87 Difference]: Start difference. First operand 299 states and 362 transitions. Second operand 6 states. [2019-09-20 13:05:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:27,224 INFO L93 Difference]: Finished difference Result 823 states and 1020 transitions. [2019-09-20 13:05:27,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:05:27,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-20 13:05:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:27,233 INFO L225 Difference]: With dead ends: 823 [2019-09-20 13:05:27,233 INFO L226 Difference]: Without dead ends: 552 [2019-09-20 13:05:27,241 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:05:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-09-20 13:05:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 546. [2019-09-20 13:05:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-09-20 13:05:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 664 transitions. [2019-09-20 13:05:27,306 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 664 transitions. Word has length 62 [2019-09-20 13:05:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:27,311 INFO L475 AbstractCegarLoop]: Abstraction has 546 states and 664 transitions. [2019-09-20 13:05:27,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:05:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 664 transitions. [2019-09-20 13:05:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-20 13:05:27,322 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:27,322 INFO L407 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] [2019-09-20 13:05:27,322 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1656310289, now seen corresponding path program 1 times [2019-09-20 13:05:27,323 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:27,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:27,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:27,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:27,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:05:27,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:27,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:05:27,487 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:05:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:05:27,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:05:27,487 INFO L87 Difference]: Start difference. First operand 546 states and 664 transitions. Second operand 7 states. [2019-09-20 13:05:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:28,295 INFO L93 Difference]: Finished difference Result 1389 states and 1810 transitions. [2019-09-20 13:05:28,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:05:28,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-20 13:05:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:28,306 INFO L225 Difference]: With dead ends: 1389 [2019-09-20 13:05:28,307 INFO L226 Difference]: Without dead ends: 871 [2019-09-20 13:05:28,309 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:05:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-09-20 13:05:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 775. [2019-09-20 13:05:28,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2019-09-20 13:05:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 939 transitions. [2019-09-20 13:05:28,386 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 939 transitions. Word has length 66 [2019-09-20 13:05:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:28,387 INFO L475 AbstractCegarLoop]: Abstraction has 775 states and 939 transitions. [2019-09-20 13:05:28,387 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:05:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 939 transitions. [2019-09-20 13:05:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:05:28,394 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:28,395 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:28,395 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1069328684, now seen corresponding path program 1 times [2019-09-20 13:05:28,396 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:28,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:28,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:28,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:28,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:05:28,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:28,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:05:28,503 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:05:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:05:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:05:28,504 INFO L87 Difference]: Start difference. First operand 775 states and 939 transitions. Second operand 6 states. [2019-09-20 13:05:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:28,572 INFO L93 Difference]: Finished difference Result 1550 states and 1938 transitions. [2019-09-20 13:05:28,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:05:28,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-20 13:05:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:28,580 INFO L225 Difference]: With dead ends: 1550 [2019-09-20 13:05:28,580 INFO L226 Difference]: Without dead ends: 803 [2019-09-20 13:05:28,583 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:05:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-09-20 13:05:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 795. [2019-09-20 13:05:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-09-20 13:05:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 959 transitions. [2019-09-20 13:05:28,635 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 959 transitions. Word has length 103 [2019-09-20 13:05:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:28,636 INFO L475 AbstractCegarLoop]: Abstraction has 795 states and 959 transitions. [2019-09-20 13:05:28,636 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:05:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 959 transitions. [2019-09-20 13:05:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:05:28,639 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:28,639 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:28,640 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash 858944018, now seen corresponding path program 1 times [2019-09-20 13:05:28,640 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:28,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:28,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:28,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:28,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:05:28,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:28,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:05:28,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:05:28,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:05:28,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:05:28,743 INFO L87 Difference]: Start difference. First operand 795 states and 959 transitions. Second operand 8 states. [2019-09-20 13:05:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:28,807 INFO L93 Difference]: Finished difference Result 1590 states and 1978 transitions. [2019-09-20 13:05:28,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:05:28,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-20 13:05:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:28,816 INFO L225 Difference]: With dead ends: 1590 [2019-09-20 13:05:28,816 INFO L226 Difference]: Without dead ends: 823 [2019-09-20 13:05:28,819 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:05:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2019-09-20 13:05:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 811. [2019-09-20 13:05:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-09-20 13:05:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-09-20 13:05:28,888 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 103 [2019-09-20 13:05:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:28,889 INFO L475 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-09-20 13:05:28,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:05:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-09-20 13:05:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:05:28,892 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:28,893 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:28,893 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:28,893 INFO L82 PathProgramCache]: Analyzing trace with hash 618403889, now seen corresponding path program 1 times [2019-09-20 13:05:28,894 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:28,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:28,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:28,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:28,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:05:28,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:28,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:05:28,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:05:28,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:05:28,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:05:28,988 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 4 states. [2019-09-20 13:05:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:29,317 INFO L93 Difference]: Finished difference Result 2557 states and 3226 transitions. [2019-09-20 13:05:29,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:05:29,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-20 13:05:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:29,332 INFO L225 Difference]: With dead ends: 2557 [2019-09-20 13:05:29,333 INFO L226 Difference]: Without dead ends: 1774 [2019-09-20 13:05:29,341 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:05:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2019-09-20 13:05:29,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1743. [2019-09-20 13:05:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1743 states. [2019-09-20 13:05:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2151 transitions. [2019-09-20 13:05:29,518 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2151 transitions. Word has length 103 [2019-09-20 13:05:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:29,519 INFO L475 AbstractCegarLoop]: Abstraction has 1743 states and 2151 transitions. [2019-09-20 13:05:29,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:05:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2151 transitions. [2019-09-20 13:05:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:05:29,524 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:29,525 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:29,525 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1230367511, now seen corresponding path program 1 times [2019-09-20 13:05:29,525 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:29,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:29,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:29,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:29,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:05:29,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:05:29,743 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:05:29,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:29,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-20 13:05:30,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:05:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:05:30,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:05:30,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2019-09-20 13:05:30,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:05:30,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:05:30,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:05:30,222 INFO L87 Difference]: Start difference. First operand 1743 states and 2151 transitions. Second operand 19 states. [2019-09-20 13:05:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:31,591 INFO L93 Difference]: Finished difference Result 3428 states and 4278 transitions. [2019-09-20 13:05:31,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:05:31,591 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 107 [2019-09-20 13:05:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:31,602 INFO L225 Difference]: With dead ends: 3428 [2019-09-20 13:05:31,603 INFO L226 Difference]: Without dead ends: 1713 [2019-09-20 13:05:31,609 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:05:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2019-09-20 13:05:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2019-09-20 13:05:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2019-09-20 13:05:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2069 transitions. [2019-09-20 13:05:31,725 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2069 transitions. Word has length 107 [2019-09-20 13:05:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:31,726 INFO L475 AbstractCegarLoop]: Abstraction has 1713 states and 2069 transitions. [2019-09-20 13:05:31,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:05:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2069 transitions. [2019-09-20 13:05:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-20 13:05:31,737 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:31,738 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:31,738 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:31,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1472890813, now seen corresponding path program 1 times [2019-09-20 13:05:31,739 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:31,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:31,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:31,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:31,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:05:31,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:05:31,864 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:05:31,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:32,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 13:05:32,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:05:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:05:32,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:05:32,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2019-09-20 13:05:32,371 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:05:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:05:32,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:05:32,373 INFO L87 Difference]: Start difference. First operand 1713 states and 2069 transitions. Second operand 6 states. [2019-09-20 13:05:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:33,388 INFO L93 Difference]: Finished difference Result 3917 states and 4997 transitions. [2019-09-20 13:05:33,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:05:33,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2019-09-20 13:05:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:33,410 INFO L225 Difference]: With dead ends: 3917 [2019-09-20 13:05:33,411 INFO L226 Difference]: Without dead ends: 2548 [2019-09-20 13:05:33,417 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:05:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2019-09-20 13:05:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2223. [2019-09-20 13:05:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2223 states. [2019-09-20 13:05:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2701 transitions. [2019-09-20 13:05:33,566 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2701 transitions. Word has length 164 [2019-09-20 13:05:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:33,566 INFO L475 AbstractCegarLoop]: Abstraction has 2223 states and 2701 transitions. [2019-09-20 13:05:33,566 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:05:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2701 transitions. [2019-09-20 13:05:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-09-20 13:05:33,574 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:33,574 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:33,575 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:33,575 INFO L82 PathProgramCache]: Analyzing trace with hash 378805481, now seen corresponding path program 1 times [2019-09-20 13:05:33,575 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:33,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:33,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:33,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:33,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-20 13:05:33,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:05:33,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:05:33,673 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:05:33,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:05:33,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:05:33,674 INFO L87 Difference]: Start difference. First operand 2223 states and 2701 transitions. Second operand 3 states. [2019-09-20 13:05:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:33,915 INFO L93 Difference]: Finished difference Result 3564 states and 4451 transitions. [2019-09-20 13:05:33,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:05:33,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-09-20 13:05:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:33,936 INFO L225 Difference]: With dead ends: 3564 [2019-09-20 13:05:33,936 INFO L226 Difference]: Without dead ends: 3561 [2019-09-20 13:05:33,938 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:05:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2019-09-20 13:05:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3271. [2019-09-20 13:05:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3271 states. [2019-09-20 13:05:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4112 transitions. [2019-09-20 13:05:34,187 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4112 transitions. Word has length 160 [2019-09-20 13:05:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:34,187 INFO L475 AbstractCegarLoop]: Abstraction has 3271 states and 4112 transitions. [2019-09-20 13:05:34,187 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:05:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4112 transitions. [2019-09-20 13:05:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-09-20 13:05:34,203 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:34,204 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:05:34,204 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1669329388, now seen corresponding path program 1 times [2019-09-20 13:05:34,205 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:34,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:34,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:34,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:34,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-09-20 13:05:34,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:05:34,424 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:05:34,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:34,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-20 13:05:34,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:05:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-09-20 13:05:34,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:05:34,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2019-09-20 13:05:34,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:05:34,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:05:34,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:05:34,936 INFO L87 Difference]: Start difference. First operand 3271 states and 4112 transitions. Second operand 13 states. [2019-09-20 13:05:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:36,838 INFO L93 Difference]: Finished difference Result 8900 states and 12724 transitions. [2019-09-20 13:05:36,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:05:36,839 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 224 [2019-09-20 13:05:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:36,878 INFO L225 Difference]: With dead ends: 8900 [2019-09-20 13:05:36,878 INFO L226 Difference]: Without dead ends: 5985 [2019-09-20 13:05:36,893 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2019-09-20 13:05:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5985 states. [2019-09-20 13:05:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5985 to 5615. [2019-09-20 13:05:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5615 states. [2019-09-20 13:05:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 7730 transitions. [2019-09-20 13:05:37,374 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 7730 transitions. Word has length 224 [2019-09-20 13:05:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:37,375 INFO L475 AbstractCegarLoop]: Abstraction has 5615 states and 7730 transitions. [2019-09-20 13:05:37,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:05:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 7730 transitions. [2019-09-20 13:05:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-09-20 13:05:37,404 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:37,404 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:37,404 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:37,405 INFO L82 PathProgramCache]: Analyzing trace with hash 832452702, now seen corresponding path program 1 times [2019-09-20 13:05:37,405 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:37,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:37,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:37,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:37,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 62 proven. 31 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-09-20 13:05:37,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:05:37,651 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:05:37,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:37,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-20 13:05:37,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:05:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 149 proven. 13 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-09-20 13:05:38,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:05:38,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 13 [2019-09-20 13:05:38,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:05:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:05:38,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:05:38,043 INFO L87 Difference]: Start difference. First operand 5615 states and 7730 transitions. Second operand 13 states. [2019-09-20 13:05:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:39,964 INFO L93 Difference]: Finished difference Result 11665 states and 16399 transitions. [2019-09-20 13:05:39,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 13:05:39,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 273 [2019-09-20 13:05:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:40,023 INFO L225 Difference]: With dead ends: 11665 [2019-09-20 13:05:40,023 INFO L226 Difference]: Without dead ends: 6570 [2019-09-20 13:05:40,045 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2019-09-20 13:05:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2019-09-20 13:05:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 5018. [2019-09-20 13:05:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5018 states. [2019-09-20 13:05:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 6115 transitions. [2019-09-20 13:05:40,430 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 6115 transitions. Word has length 273 [2019-09-20 13:05:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:40,431 INFO L475 AbstractCegarLoop]: Abstraction has 5018 states and 6115 transitions. [2019-09-20 13:05:40,431 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:05:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 6115 transitions. [2019-09-20 13:05:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-09-20 13:05:40,456 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:40,456 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:05:40,457 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:40,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1701171512, now seen corresponding path program 2 times [2019-09-20 13:05:40,457 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:40,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:40,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:40,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 26 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:05:40,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:05:40,724 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:05:40,793 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:05:41,373 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 13:05:41,373 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:05:41,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-20 13:05:41,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:05:41,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:05:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-20 13:05:41,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:05:41,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2019-09-20 13:05:41,572 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:05:41,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:05:41,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:05:41,573 INFO L87 Difference]: Start difference. First operand 5018 states and 6115 transitions. Second operand 16 states. [2019-09-20 13:05:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:44,719 INFO L93 Difference]: Finished difference Result 12515 states and 16015 transitions. [2019-09-20 13:05:44,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-20 13:05:44,719 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 220 [2019-09-20 13:05:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:44,757 INFO L225 Difference]: With dead ends: 12515 [2019-09-20 13:05:44,757 INFO L226 Difference]: Without dead ends: 8321 [2019-09-20 13:05:44,771 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:05:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8321 states. [2019-09-20 13:05:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8321 to 7619. [2019-09-20 13:05:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7619 states. [2019-09-20 13:05:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7619 states to 7619 states and 9368 transitions. [2019-09-20 13:05:45,259 INFO L78 Accepts]: Start accepts. Automaton has 7619 states and 9368 transitions. Word has length 220 [2019-09-20 13:05:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:45,261 INFO L475 AbstractCegarLoop]: Abstraction has 7619 states and 9368 transitions. [2019-09-20 13:05:45,261 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:05:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7619 states and 9368 transitions. [2019-09-20 13:05:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-09-20 13:05:45,288 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:05:45,288 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:05:45,289 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:05:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:05:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 817662522, now seen corresponding path program 1 times [2019-09-20 13:05:45,289 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:05:45,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:05:45,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:45,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:05:45,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:05:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-09-20 13:05:45,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:05:45,427 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:05:45,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:05:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:05:45,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:05:45,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:05:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-09-20 13:05:45,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:05:45,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2019-09-20 13:05:45,716 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:05:45,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:05:45,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:05:45,717 INFO L87 Difference]: Start difference. First operand 7619 states and 9368 transitions. Second operand 13 states. [2019-09-20 13:05:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:05:45,875 INFO L93 Difference]: Finished difference Result 9083 states and 11061 transitions. [2019-09-20 13:05:45,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:05:45,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 220 [2019-09-20 13:05:45,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:05:45,878 INFO L225 Difference]: With dead ends: 9083 [2019-09-20 13:05:45,879 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:05:45,901 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:05:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:05:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:05:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:05:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:05:45,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2019-09-20 13:05:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:05:45,904 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:05:45,904 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:05:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:05:45,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:05:45,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:05:46,329 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 75 [2019-09-20 13:05:46,638 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-09-20 13:05:47,418 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 84 [2019-09-20 13:05:48,503 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 124 [2019-09-20 13:05:48,668 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 82 [2019-09-20 13:05:49,320 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 29 [2019-09-20 13:05:49,482 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 1 [2019-09-20 13:05:49,714 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2019-09-20 13:05:50,033 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 30 [2019-09-20 13:05:50,986 WARN L191 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 54 [2019-09-20 13:05:51,340 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 33 [2019-09-20 13:05:51,687 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 36 [2019-09-20 13:05:52,160 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 35 [2019-09-20 13:05:52,577 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 35