/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:58:27,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:58:27,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:58:27,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:58:27,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:58:27,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:58:27,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:58:27,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:58:27,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:58:27,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:58:27,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:58:27,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:58:27,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:58:27,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:58:27,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:58:27,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:58:27,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:58:27,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:58:27,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:58:27,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:58:27,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:58:27,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:58:27,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:58:27,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:58:27,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:58:27,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:58:27,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:58:27,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:58:27,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:58:27,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:58:27,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:58:27,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:58:27,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:58:27,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:58:27,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:58:27,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:58:28,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:58:28,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:58:28,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:58:28,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:58:28,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:58:28,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:58:28,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:58:28,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:58:28,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:58:28,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:58:28,031 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:58:28,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:58:28,031 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:58:28,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:58:28,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:58:28,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:58:28,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:58:28,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:58:28,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:58:28,033 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:58:28,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:58:28,034 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:58:28,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:58:28,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:58:28,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:58:28,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:58:28,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:58:28,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:58:28,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:58:28,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:58:28,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:58:28,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:58:28,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:58:28,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:58:28,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:58:28,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:58:28,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:58:28,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:58:28,359 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:58:28,359 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:58:28,360 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-11-06 21:58:28,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9a9a5bb/fbbc2bed45f741549d7f383d39670340/FLAG11e5ba17d [2019-11-06 21:58:28,974 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:58:28,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-11-06 21:58:28,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9a9a5bb/fbbc2bed45f741549d7f383d39670340/FLAG11e5ba17d [2019-11-06 21:58:29,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9a9a5bb/fbbc2bed45f741549d7f383d39670340 [2019-11-06 21:58:29,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:58:29,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:58:29,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:29,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:58:29,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:58:29,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3743a8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29, skipping insertion in model container [2019-11-06 21:58:29,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,265 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:58:29,325 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:58:29,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:29,780 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:58:29,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:29,890 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:58:29,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29 WrapperNode [2019-11-06 21:58:29,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:29,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:58:29,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:58:29,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:58:29,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... [2019-11-06 21:58:29,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:58:29,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:58:29,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:58:29,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:58:29,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:58:30,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:58:30,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:58:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:58:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:58:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:58:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:58:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:58:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:58:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:58:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:58:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:58:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:30,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:58:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:58:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:58:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:58:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:58:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:58:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:58:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:58:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:58:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:58:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:58:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:58:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:58:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:58:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:58:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:58:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:58:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:58:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:58:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 21:58:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:58:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:58:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:58:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:58:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:58:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:58:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:58:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:58:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:58:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:58:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:58:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:58:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:58:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:58:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:58:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:58:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:58:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:58:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:58:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:58:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:58:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:58:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 21:58:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:58:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:58:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:58:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:58:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:58:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:58:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:58:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:58:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:58:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:58:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:58:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:58:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:58:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:58:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:58:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:58:31,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:58:31,124 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:58:31,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:31 BoogieIcfgContainer [2019-11-06 21:58:31,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:58:31,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:58:31,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:58:31,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:58:31,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:29" (1/3) ... [2019-11-06 21:58:31,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82eab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:31, skipping insertion in model container [2019-11-06 21:58:31,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:29" (2/3) ... [2019-11-06 21:58:31,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82eab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:31, skipping insertion in model container [2019-11-06 21:58:31,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:31" (3/3) ... [2019-11-06 21:58:31,135 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2019-11-06 21:58:31,144 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:58:31,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:58:31,165 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:58:31,191 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:58:31,192 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:58:31,192 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:58:31,192 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:58:31,192 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:58:31,192 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:58:31,193 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:58:31,193 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:58:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-11-06 21:58:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:58:31,233 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:31,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:31,238 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:31,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2019-11-06 21:58:31,255 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:31,256 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089028935] [2019-11-06 21:58:31,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,986 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:32,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089028935] [2019-11-06 21:58:32,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:32,067 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:58:32,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041339246] [2019-11-06 21:58:32,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:58:32,074 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:58:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:32,091 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2019-11-06 21:58:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:33,296 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2019-11-06 21:58:33,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:58:33,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:58:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:33,323 INFO L225 Difference]: With dead ends: 306 [2019-11-06 21:58:33,323 INFO L226 Difference]: Without dead ends: 170 [2019-11-06 21:58:33,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-06 21:58:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2019-11-06 21:58:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-06 21:58:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-11-06 21:58:33,431 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2019-11-06 21:58:33,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:33,431 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-11-06 21:58:33,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:58:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-11-06 21:58:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:58:33,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:33,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:33,436 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2019-11-06 21:58:33,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:33,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758900101] [2019-11-06 21:58:33,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,787 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:33,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758900101] [2019-11-06 21:58:33,830 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:33,830 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:58:33,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147087156] [2019-11-06 21:58:33,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:58:33,832 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:33,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:58:33,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:58:33,833 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2019-11-06 21:58:34,306 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:35,229 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2019-11-06 21:58:35,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:58:35,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:58:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:35,232 INFO L225 Difference]: With dead ends: 247 [2019-11-06 21:58:35,232 INFO L226 Difference]: Without dead ends: 160 [2019-11-06 21:58:35,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:58:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-06 21:58:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-11-06 21:58:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-06 21:58:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2019-11-06 21:58:35,281 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2019-11-06 21:58:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:35,281 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2019-11-06 21:58:35,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:58:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2019-11-06 21:58:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 21:58:35,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:35,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:35,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2019-11-06 21:58:35,285 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:35,285 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508227923] [2019-11-06 21:58:35,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,676 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:35,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508227923] [2019-11-06 21:58:35,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:35,808 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:35,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76654843] [2019-11-06 21:58:35,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:35,809 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:35,810 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2019-11-06 21:58:36,177 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:36,524 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 21:58:36,838 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:37,099 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:38,482 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2019-11-06 21:58:38,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:58:38,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-06 21:58:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:38,486 INFO L225 Difference]: With dead ends: 260 [2019-11-06 21:58:38,486 INFO L226 Difference]: Without dead ends: 160 [2019-11-06 21:58:38,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:58:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-06 21:58:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-11-06 21:58:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-06 21:58:38,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2019-11-06 21:58:38,522 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2019-11-06 21:58:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:38,523 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2019-11-06 21:58:38,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2019-11-06 21:58:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 21:58:38,526 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:38,526 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:38,526 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2019-11-06 21:58:38,527 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:38,527 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806905449] [2019-11-06 21:58:38,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,834 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:38,961 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806905449] [2019-11-06 21:58:38,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:38,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:58:38,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620618158] [2019-11-06 21:58:38,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:58:38,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:38,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:58:38,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:58:38,964 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2019-11-06 21:58:39,324 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:40,617 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:41,348 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2019-11-06 21:58:41,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:58:41,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-11-06 21:58:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:41,352 INFO L225 Difference]: With dead ends: 359 [2019-11-06 21:58:41,352 INFO L226 Difference]: Without dead ends: 259 [2019-11-06 21:58:41,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:58:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-11-06 21:58:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2019-11-06 21:58:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-11-06 21:58:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2019-11-06 21:58:41,406 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2019-11-06 21:58:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:41,407 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2019-11-06 21:58:41,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:58:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2019-11-06 21:58:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-06 21:58:41,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:41,409 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:41,410 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2019-11-06 21:58:41,410 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:41,410 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590122733] [2019-11-06 21:58:41,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,756 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:41,897 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590122733] [2019-11-06 21:58:41,898 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:41,898 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:41,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791486616] [2019-11-06 21:58:41,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:41,900 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:41,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:41,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:41,902 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2019-11-06 21:58:42,329 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:43,749 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:44,048 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:44,323 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:44,565 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:45,892 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2019-11-06 21:58:45,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:58:45,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-11-06 21:58:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:45,899 INFO L225 Difference]: With dead ends: 626 [2019-11-06 21:58:45,899 INFO L226 Difference]: Without dead ends: 444 [2019-11-06 21:58:45,900 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:58:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-11-06 21:58:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2019-11-06 21:58:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2019-11-06 21:58:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2019-11-06 21:58:45,977 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2019-11-06 21:58:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:45,981 INFO L462 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2019-11-06 21:58:45,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2019-11-06 21:58:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:45,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:45,984 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:45,984 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:45,984 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2019-11-06 21:58:45,984 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:45,985 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791527477] [2019-11-06 21:58:45,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,322 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:46,456 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791527477] [2019-11-06 21:58:46,464 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:46,464 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:46,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323070819] [2019-11-06 21:58:46,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:46,465 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:46,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:46,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:46,466 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2019-11-06 21:58:46,912 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:48,202 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:48,465 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:48,755 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:49,032 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:50,035 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2019-11-06 21:58:50,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:58:50,036 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-11-06 21:58:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:50,041 INFO L225 Difference]: With dead ends: 822 [2019-11-06 21:58:50,041 INFO L226 Difference]: Without dead ends: 482 [2019-11-06 21:58:50,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-11-06 21:58:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-11-06 21:58:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2019-11-06 21:58:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2019-11-06 21:58:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2019-11-06 21:58:50,114 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2019-11-06 21:58:50,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:50,115 INFO L462 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2019-11-06 21:58:50,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2019-11-06 21:58:50,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 21:58:50,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:50,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:50,117 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:50,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2019-11-06 21:58:50,118 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:50,118 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215370899] [2019-11-06 21:58:50,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,415 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:50,551 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215370899] [2019-11-06 21:58:50,552 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:50,552 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:50,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024820822] [2019-11-06 21:58:50,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:50,553 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:50,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:50,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:50,554 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2019-11-06 21:58:51,523 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:51,792 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 21:58:52,079 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:52,371 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:53,583 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2019-11-06 21:58:53,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:58:53,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-11-06 21:58:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:53,588 INFO L225 Difference]: With dead ends: 825 [2019-11-06 21:58:53,589 INFO L226 Difference]: Without dead ends: 486 [2019-11-06 21:58:53,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:58:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-11-06 21:58:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2019-11-06 21:58:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2019-11-06 21:58:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2019-11-06 21:58:53,677 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2019-11-06 21:58:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:53,677 INFO L462 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2019-11-06 21:58:53,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2019-11-06 21:58:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 21:58:53,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:53,679 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:53,680 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2019-11-06 21:58:53,680 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:53,680 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843485764] [2019-11-06 21:58:53,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,939 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:54,117 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843485764] [2019-11-06 21:58:54,118 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:54,118 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:58:54,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305461764] [2019-11-06 21:58:54,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:58:54,126 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:54,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:58:54,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:58:54,127 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2019-11-06 21:58:54,731 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:54,986 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:55,233 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:56,075 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:56,370 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:56,665 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:58,260 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2019-11-06 21:58:58,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:58:58,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-11-06 21:58:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:58,264 INFO L225 Difference]: With dead ends: 849 [2019-11-06 21:58:58,264 INFO L226 Difference]: Without dead ends: 500 [2019-11-06 21:58:58,266 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:58:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-06 21:58:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2019-11-06 21:58:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-11-06 21:58:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2019-11-06 21:58:58,324 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2019-11-06 21:58:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:58,324 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2019-11-06 21:58:58,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:58:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2019-11-06 21:58:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 21:58:58,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:58,326 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:58,326 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:58,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2019-11-06 21:58:58,327 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:58,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631443589] [2019-11-06 21:58:58,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,674 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:58,810 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631443589] [2019-11-06 21:58:58,811 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:58,811 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:58:58,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464160355] [2019-11-06 21:58:58,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:58:58,812 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:58,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:58:58,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:58:58,812 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2019-11-06 21:58:59,217 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:59,820 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:02,307 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2019-11-06 21:59:02,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:59:02,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-11-06 21:59:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:02,313 INFO L225 Difference]: With dead ends: 1197 [2019-11-06 21:59:02,313 INFO L226 Difference]: Without dead ends: 840 [2019-11-06 21:59:02,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-11-06 21:59:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-11-06 21:59:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2019-11-06 21:59:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-11-06 21:59:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2019-11-06 21:59:02,434 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2019-11-06 21:59:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:02,434 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2019-11-06 21:59:02,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:59:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2019-11-06 21:59:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 21:59:02,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:02,437 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:59:02,437 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:02,437 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2019-11-06 21:59:02,437 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:02,438 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741022576] [2019-11-06 21:59:02,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,800 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:02,891 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741022576] [2019-11-06 21:59:02,891 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:02,891 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:59:02,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645065935] [2019-11-06 21:59:02,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:59:02,892 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:02,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:59:02,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:59:02,893 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2019-11-06 21:59:03,299 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:05,924 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2019-11-06 21:59:05,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-06 21:59:05,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-11-06 21:59:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:05,933 INFO L225 Difference]: With dead ends: 1377 [2019-11-06 21:59:05,934 INFO L226 Difference]: Without dead ends: 1374 [2019-11-06 21:59:05,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-11-06 21:59:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2019-11-06 21:59:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2019-11-06 21:59:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2019-11-06 21:59:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2019-11-06 21:59:06,201 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2019-11-06 21:59:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:06,202 INFO L462 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2019-11-06 21:59:06,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:59:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2019-11-06 21:59:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 21:59:06,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:06,208 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:59:06,208 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2019-11-06 21:59:06,209 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:06,210 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565146096] [2019-11-06 21:59:06,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,541 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-06 21:59:06,780 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565146096] [2019-11-06 21:59:06,780 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923362377] [2019-11-06 21:59:06,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:59:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:07,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:59:07,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:59:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:07,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:59:07,110 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2019-11-06 21:59:07,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879282980] [2019-11-06 21:59:07,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:59:07,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:07,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:59:07,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:59:07,112 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 3 states.