java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:39:37,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:39:37,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:39:37,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:39:37,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:39:37,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:39:37,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:39:37,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:39:37,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:39:37,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:39:37,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:39:37,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:39:37,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:39:37,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:39:37,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:39:37,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:39:37,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:39:37,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:39:37,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:39:37,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:39:37,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:39:37,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:39:37,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:39:37,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:39:37,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:39:37,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:39:37,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:39:37,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:39:37,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:39:37,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:39:37,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:39:37,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:39:37,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:39:37,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:39:37,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:39:37,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:39:37,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:39:37,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:39:37,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:39:37,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:39:37,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:39:37,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:39:37,925 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:39:37,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:39:37,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:39:37,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:39:37,927 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:39:37,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:39:37,928 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:39:37,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:39:37,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:39:37,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:39:37,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:39:37,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:39:37,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:39:37,929 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:39:37,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:39:37,929 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:39:37,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:39:37,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:39:37,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:39:37,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:39:37,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:39:37,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:37,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:39:37,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:39:37,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:39:37,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:39:37,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:39:37,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:39:37,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:39:38,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:39:38,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:39:38,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:39:38,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:39:38,266 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:39:38,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2019-10-13 19:39:38,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c02d697/fbaced8fd9fe4079aaff7cf0364eeb0d/FLAG7bd204c39 [2019-10-13 19:39:38,862 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:39:38,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2019-10-13 19:39:38,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c02d697/fbaced8fd9fe4079aaff7cf0364eeb0d/FLAG7bd204c39 [2019-10-13 19:39:39,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c02d697/fbaced8fd9fe4079aaff7cf0364eeb0d [2019-10-13 19:39:39,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:39:39,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:39:39,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:39,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:39:39,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:39:39,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b21f4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39, skipping insertion in model container [2019-10-13 19:39:39,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,188 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:39:39,254 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:39:39,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:39,686 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:39:39,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:39,807 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:39:39,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39 WrapperNode [2019-10-13 19:39:39,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:39,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:39:39,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:39:39,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:39:39,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... [2019-10-13 19:39:39,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:39:39,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:39:39,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:39:39,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:39:39,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:39:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:39:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:39:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:39:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:39:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:39:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:39:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:39:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:39:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:39:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:39:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:39:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:39:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:39:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:39:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:39:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:39:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:39:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:39:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:39:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:39:39,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:39:39,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:39:39,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:39:39,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:39:39,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:39:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:39:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:39:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:39:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:39:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:39:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:39:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:39:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:39:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:39:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:39:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:39:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:39:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:39:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:39:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:39:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:39:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:39:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:39:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:39:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:39:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:39:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:39:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:39:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:39:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:39:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:39:40,003 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:40,003 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:39:40,003 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:39:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:39:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:39:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:39:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:39:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:39:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:39:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:39:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:39:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:39:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:39:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:39:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:39:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:39:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:39:41,099 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:39:41,100 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:39:41,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:41 BoogieIcfgContainer [2019-10-13 19:39:41,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:39:41,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:39:41,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:39:41,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:39:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:39" (1/3) ... [2019-10-13 19:39:41,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce9895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:41, skipping insertion in model container [2019-10-13 19:39:41,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:39" (2/3) ... [2019-10-13 19:39:41,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce9895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:41, skipping insertion in model container [2019-10-13 19:39:41,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:41" (3/3) ... [2019-10-13 19:39:41,111 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2019-10-13 19:39:41,121 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:39:41,131 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:39:41,142 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:39:41,182 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:39:41,182 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:39:41,182 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:39:41,182 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:39:41,183 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:39:41,183 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:39:41,183 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:39:41,183 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:39:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2019-10-13 19:39:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:39:41,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:41,213 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:41,215 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:41,220 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2019-10-13 19:39:41,228 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:41,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280607814] [2019-10-13 19:39:41,229 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:41,229 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:41,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,911 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:42,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280607814] [2019-10-13 19:39:42,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:42,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:39:42,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490028888] [2019-10-13 19:39:42,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:39:42,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:42,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:39:42,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:42,046 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2019-10-13 19:39:43,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:43,208 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2019-10-13 19:39:43,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:39:43,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:39:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:43,224 INFO L225 Difference]: With dead ends: 297 [2019-10-13 19:39:43,225 INFO L226 Difference]: Without dead ends: 160 [2019-10-13 19:39:43,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-13 19:39:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-10-13 19:39:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-13 19:39:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2019-10-13 19:39:43,315 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2019-10-13 19:39:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:43,316 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2019-10-13 19:39:43,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:39:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2019-10-13 19:39:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:39:43,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:43,319 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:43,319 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2019-10-13 19:39:43,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:43,320 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712887933] [2019-10-13 19:39:43,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:43,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:43,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,667 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:43,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712887933] [2019-10-13 19:39:43,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:43,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:39:43,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087363937] [2019-10-13 19:39:43,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:39:43,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:43,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:39:43,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:39:43,723 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2019-10-13 19:39:44,186 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:44,944 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2019-10-13 19:39:44,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:39:44,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:39:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:44,948 INFO L225 Difference]: With dead ends: 230 [2019-10-13 19:39:44,948 INFO L226 Difference]: Without dead ends: 144 [2019-10-13 19:39:44,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:39:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-13 19:39:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2019-10-13 19:39:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-13 19:39:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2019-10-13 19:39:44,985 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2019-10-13 19:39:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:44,985 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2019-10-13 19:39:44,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:39:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2019-10-13 19:39:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:39:44,988 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:44,988 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:44,988 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:44,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:44,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2019-10-13 19:39:44,989 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:44,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411681070] [2019-10-13 19:39:44,989 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:44,989 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:44,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,345 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:45,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411681070] [2019-10-13 19:39:45,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:45,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:39:45,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434730578] [2019-10-13 19:39:45,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:39:45,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:45,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:39:45,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:39:45,415 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2019-10-13 19:39:45,917 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:46,240 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:46,496 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:46,777 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:48,021 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2019-10-13 19:39:48,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:39:48,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:39:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:48,025 INFO L225 Difference]: With dead ends: 239 [2019-10-13 19:39:48,025 INFO L226 Difference]: Without dead ends: 144 [2019-10-13 19:39:48,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:39:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-13 19:39:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2019-10-13 19:39:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-13 19:39:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2019-10-13 19:39:48,055 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2019-10-13 19:39:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:48,056 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2019-10-13 19:39:48,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:39:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2019-10-13 19:39:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:39:48,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:48,058 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:48,058 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:48,059 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2019-10-13 19:39:48,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:48,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644871992] [2019-10-13 19:39:48,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:48,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:48,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,399 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:48,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644871992] [2019-10-13 19:39:48,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:48,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:39:48,468 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213509332] [2019-10-13 19:39:48,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:39:48,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:48,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:39:48,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:39:48,470 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2019-10-13 19:39:48,862 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:50,009 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:50,627 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2019-10-13 19:39:50,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:39:50,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-10-13 19:39:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:50,631 INFO L225 Difference]: With dead ends: 331 [2019-10-13 19:39:50,631 INFO L226 Difference]: Without dead ends: 236 [2019-10-13 19:39:50,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:39:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-10-13 19:39:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2019-10-13 19:39:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2019-10-13 19:39:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2019-10-13 19:39:50,683 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2019-10-13 19:39:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:50,683 INFO L462 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2019-10-13 19:39:50,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:39:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2019-10-13 19:39:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:39:50,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:50,686 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:50,686 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:50,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2019-10-13 19:39:50,686 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:50,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769975670] [2019-10-13 19:39:50,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:50,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:50,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,028 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:51,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769975670] [2019-10-13 19:39:51,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:51,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:39:51,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355722769] [2019-10-13 19:39:51,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:39:51,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:51,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:39:51,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:39:51,168 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2019-10-13 19:39:51,897 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:52,241 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:52,508 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:52,792 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:53,377 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:54,306 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:54,615 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:54,894 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:55,155 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:39:55,446 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:55,721 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:57,103 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:57,463 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:58,079 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2019-10-13 19:39:58,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:39:58,080 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2019-10-13 19:39:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:58,086 INFO L225 Difference]: With dead ends: 677 [2019-10-13 19:39:58,086 INFO L226 Difference]: Without dead ends: 506 [2019-10-13 19:39:58,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:39:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-10-13 19:39:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2019-10-13 19:39:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2019-10-13 19:39:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2019-10-13 19:39:58,180 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2019-10-13 19:39:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:58,181 INFO L462 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2019-10-13 19:39:58,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:39:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2019-10-13 19:39:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 19:39:58,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:58,186 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:58,186 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:58,187 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2019-10-13 19:39:58,187 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:58,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621528698] [2019-10-13 19:39:58,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:58,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:58,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,463 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:39:58,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621528698] [2019-10-13 19:39:58,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999957648] [2019-10-13 19:39:58,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:39:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:58,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:39:58,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:39:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:59,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:39:59,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-13 19:39:59,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738275503] [2019-10-13 19:39:59,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:39:59,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:59,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:39:59,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:39:59,125 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 8 states. [2019-10-13 19:40:00,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:00,348 INFO L93 Difference]: Finished difference Result 1148 states and 1506 transitions. [2019-10-13 19:40:00,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:40:00,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2019-10-13 19:40:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:00,358 INFO L225 Difference]: With dead ends: 1148 [2019-10-13 19:40:00,359 INFO L226 Difference]: Without dead ends: 824 [2019-10-13 19:40:00,361 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:40:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-10-13 19:40:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 753. [2019-10-13 19:40:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-13 19:40:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 930 transitions. [2019-10-13 19:40:00,558 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 930 transitions. Word has length 136 [2019-10-13 19:40:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:00,559 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 930 transitions. [2019-10-13 19:40:00,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 930 transitions. [2019-10-13 19:40:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 19:40:00,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:00,563 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:00,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:00,771 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash -772272072, now seen corresponding path program 1 times [2019-10-13 19:40:00,772 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:00,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889480473] [2019-10-13 19:40:00,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,061 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:40:01,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889480473] [2019-10-13 19:40:01,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624665731] [2019-10-13 19:40:01,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:01,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:01,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:40:01,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:01,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-13 19:40:01,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310921878] [2019-10-13 19:40:01,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:01,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:01,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:01,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:40:01,452 INFO L87 Difference]: Start difference. First operand 753 states and 930 transitions. Second operand 6 states. [2019-10-13 19:40:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:01,620 INFO L93 Difference]: Finished difference Result 1502 states and 1896 transitions. [2019-10-13 19:40:01,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:40:01,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2019-10-13 19:40:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:01,626 INFO L225 Difference]: With dead ends: 1502 [2019-10-13 19:40:01,626 INFO L226 Difference]: Without dead ends: 773 [2019-10-13 19:40:01,629 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:01,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-13 19:40:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2019-10-13 19:40:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2019-10-13 19:40:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 954 transitions. [2019-10-13 19:40:01,769 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 954 transitions. Word has length 128 [2019-10-13 19:40:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:01,770 INFO L462 AbstractCegarLoop]: Abstraction has 773 states and 954 transitions. [2019-10-13 19:40:01,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 954 transitions. [2019-10-13 19:40:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 19:40:01,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:01,772 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:01,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:01,986 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:01,987 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2019-10-13 19:40:01,987 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:01,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400131110] [2019-10-13 19:40:01,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:01,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:01,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,258 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:40:02,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400131110] [2019-10-13 19:40:02,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804468282] [2019-10-13 19:40:02,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:02,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:40:02,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:40:02,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:02,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-13 19:40:02,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143771811] [2019-10-13 19:40:02,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:40:02,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:02,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:40:02,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:02,683 INFO L87 Difference]: Start difference. First operand 773 states and 954 transitions. Second operand 5 states. [2019-10-13 19:40:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:02,931 INFO L93 Difference]: Finished difference Result 1397 states and 1760 transitions. [2019-10-13 19:40:02,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:02,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-10-13 19:40:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:02,936 INFO L225 Difference]: With dead ends: 1397 [2019-10-13 19:40:02,936 INFO L226 Difference]: Without dead ends: 648 [2019-10-13 19:40:02,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-10-13 19:40:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-10-13 19:40:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-13 19:40:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 786 transitions. [2019-10-13 19:40:03,070 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 786 transitions. Word has length 128 [2019-10-13 19:40:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:03,071 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 786 transitions. [2019-10-13 19:40:03,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:40:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 786 transitions. [2019-10-13 19:40:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 19:40:03,073 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:03,073 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:03,277 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:03,278 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:03,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:03,278 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2019-10-13 19:40:03,278 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:03,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106064334] [2019-10-13 19:40:03,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:03,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:03,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,596 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:40:03,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106064334] [2019-10-13 19:40:03,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90592300] [2019-10-13 19:40:03,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:03,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:04,104 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:04,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-10-13 19:40:04,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927008056] [2019-10-13 19:40:04,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 19:40:04,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:04,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 19:40:04,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:40:04,106 INFO L87 Difference]: Start difference. First operand 648 states and 786 transitions. Second operand 17 states. [2019-10-13 19:40:04,910 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:05,690 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:06,773 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:07,071 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:07,324 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:07,913 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2019-10-13 19:40:08,215 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:08,487 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:09,073 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:09,359 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:40:09,644 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:09,978 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:10,674 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:10,940 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:11,189 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:11,449 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:12,636 INFO L93 Difference]: Finished difference Result 1318 states and 1694 transitions. [2019-10-13 19:40:12,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-13 19:40:12,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2019-10-13 19:40:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:12,642 INFO L225 Difference]: With dead ends: 1318 [2019-10-13 19:40:12,642 INFO L226 Difference]: Without dead ends: 753 [2019-10-13 19:40:12,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=431, Invalid=1461, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 19:40:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-10-13 19:40:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 645. [2019-10-13 19:40:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-13 19:40:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 777 transitions. [2019-10-13 19:40:12,761 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 777 transitions. Word has length 132 [2019-10-13 19:40:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:12,764 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 777 transitions. [2019-10-13 19:40:12,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 19:40:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 777 transitions. [2019-10-13 19:40:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 19:40:12,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:12,767 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:12,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:12,973 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 637468809, now seen corresponding path program 1 times [2019-10-13 19:40:12,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:12,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329614390] [2019-10-13 19:40:12,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:12,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:12,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,250 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 19:40:13,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329614390] [2019-10-13 19:40:13,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453577903] [2019-10-13 19:40:13,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:13,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:13,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:40:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 79 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:40:13,766 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:13,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-10-13 19:40:13,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60071111] [2019-10-13 19:40:13,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 19:40:13,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:13,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 19:40:13,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:40:13,768 INFO L87 Difference]: Start difference. First operand 645 states and 777 transitions. Second operand 18 states. [2019-10-13 19:40:14,519 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:15,517 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:16,285 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186