/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:04:05,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:04:05,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:04:05,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:04:05,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:04:05,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:04:05,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:04:05,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:04:05,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:04:05,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:04:05,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:04:05,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:04:05,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:04:05,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:04:05,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:04:05,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:04:05,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:04:05,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:04:05,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:04:05,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:04:06,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:04:06,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:04:06,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:04:06,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:04:06,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:04:06,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:04:06,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:04:06,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:04:06,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:04:06,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:04:06,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:04:06,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:04:06,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:04:06,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:04:06,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:04:06,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:04:06,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:04:06,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:04:06,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:04:06,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:04:06,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:04:06,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:04:06,050 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:04:06,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:04:06,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:04:06,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:04:06,052 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:04:06,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:04:06,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:04:06,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:04:06,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:04:06,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:04:06,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:04:06,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:04:06,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:04:06,054 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:04:06,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:04:06,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:04:06,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:04:06,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:04:06,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:04:06,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:04:06,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:04:06,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:06,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:04:06,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:04:06,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:04:06,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:04:06,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:04:06,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:04:06,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:04:06,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:04:06,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:04:06,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:04:06,396 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:04:06,397 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:04:06,397 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-11-06 22:04:06,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370d01d77/235f88a06daf444e88c505164aee0732/FLAG8b7a5a257 [2019-11-06 22:04:06,977 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:04:06,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-11-06 22:04:06,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370d01d77/235f88a06daf444e88c505164aee0732/FLAG8b7a5a257 [2019-11-06 22:04:07,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370d01d77/235f88a06daf444e88c505164aee0732 [2019-11-06 22:04:07,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:04:07,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:04:07,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:07,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:04:07,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:04:07,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:07,309 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 10:04:07, skipping insertion in model container [2019-11-06 22:04:07,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:07,316 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:04:07,372 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:04:07,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:07,853 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:04:07,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:07,987 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:04:07,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07 WrapperNode [2019-11-06 22:04:07,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:07,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:04:07,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:04:07,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:04:08,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... [2019-11-06 22:04:08,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:04:08,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:04:08,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:04:08,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:04:08,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:04:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:04:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:04:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:04:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:04:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:04:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:04:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:04:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:04:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:04:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:04:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:04:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:04:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:04:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:04:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:04:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:04:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:04:08,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:08,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:08,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:08,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:04:08,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:04:08,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:04:08,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:04:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:04:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:04:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:04:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:04:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:04:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:04:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:04:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:04:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:04:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:04:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:04:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:04:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:04:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:04:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:04:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:04:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:04:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:04:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:04:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:04:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:04:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:04:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:04:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:04:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:04:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:04:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:04:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:04:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:04:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:04:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:04:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:04:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:04:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:04:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:04:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:04:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:04:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:04:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:04:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:04:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:04:09,165 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:04:09,166 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:04:09,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:09 BoogieIcfgContainer [2019-11-06 22:04:09,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:04:09,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:04:09,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:04:09,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:04:09,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:07" (1/3) ... [2019-11-06 22:04:09,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed5c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:09, skipping insertion in model container [2019-11-06 22:04:09,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:07" (2/3) ... [2019-11-06 22:04:09,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed5c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:09, skipping insertion in model container [2019-11-06 22:04:09,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:09" (3/3) ... [2019-11-06 22:04:09,177 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product57.cil.c [2019-11-06 22:04:09,187 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:04:09,196 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:04:09,207 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:04:09,240 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:04:09,240 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:04:09,240 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:04:09,240 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:04:09,241 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:04:09,241 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:04:09,241 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:04:09,241 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:04:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2019-11-06 22:04:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:04:09,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:09,278 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:09,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1827061433, now seen corresponding path program 1 times [2019-11-06 22:04:09,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:09,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178595614] [2019-11-06 22:04:09,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:09,946 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:10,052 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178595614] [2019-11-06 22:04:10,053 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:10,055 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:04:10,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235304690] [2019-11-06 22:04:10,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:04:10,071 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:10,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:04:10,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:10,093 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2019-11-06 22:04:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:11,275 INFO L93 Difference]: Finished difference Result 329 states and 422 transitions. [2019-11-06 22:04:11,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:04:11,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:04:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:11,293 INFO L225 Difference]: With dead ends: 329 [2019-11-06 22:04:11,294 INFO L226 Difference]: Without dead ends: 177 [2019-11-06 22:04:11,299 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-06 22:04:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2019-11-06 22:04:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-11-06 22:04:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2019-11-06 22:04:11,397 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 46 [2019-11-06 22:04:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:11,400 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2019-11-06 22:04:11,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:04:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2019-11-06 22:04:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:04:11,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:11,405 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:11,406 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:11,406 INFO L82 PathProgramCache]: Analyzing trace with hash 632131827, now seen corresponding path program 1 times [2019-11-06 22:04:11,406 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:11,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358232241] [2019-11-06 22:04:11,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,806 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:11,840 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358232241] [2019-11-06 22:04:11,840 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:11,840 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:04:11,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017460570] [2019-11-06 22:04:11,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:04:11,843 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:11,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:04:11,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:04:11,843 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand 4 states. [2019-11-06 22:04:12,289 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:13,190 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2019-11-06 22:04:13,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:13,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:04:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:13,193 INFO L225 Difference]: With dead ends: 262 [2019-11-06 22:04:13,194 INFO L226 Difference]: Without dead ends: 161 [2019-11-06 22:04:13,195 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:04:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-11-06 22:04:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2019-11-06 22:04:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-06 22:04:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2019-11-06 22:04:13,233 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 47 [2019-11-06 22:04:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:13,234 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2019-11-06 22:04:13,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:04:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2019-11-06 22:04:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:04:13,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:13,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:13,237 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash 880596518, now seen corresponding path program 1 times [2019-11-06 22:04:13,237 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:13,238 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839155326] [2019-11-06 22:04:13,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,606 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:13,671 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839155326] [2019-11-06 22:04:13,671 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:13,672 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:04:13,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14546208] [2019-11-06 22:04:13,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:13,673 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:13,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:13,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:04:13,673 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand 8 states. [2019-11-06 22:04:14,081 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:14,414 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:14,701 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:14,959 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:16,269 INFO L93 Difference]: Finished difference Result 271 states and 327 transitions. [2019-11-06 22:04:16,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:04:16,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 22:04:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:16,271 INFO L225 Difference]: With dead ends: 271 [2019-11-06 22:04:16,272 INFO L226 Difference]: Without dead ends: 161 [2019-11-06 22:04:16,273 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-11-06 22:04:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2019-11-06 22:04:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-06 22:04:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2019-11-06 22:04:16,303 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 51 [2019-11-06 22:04:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:16,304 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2019-11-06 22:04:16,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2019-11-06 22:04:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:04:16,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:16,306 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:16,307 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:16,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:16,307 INFO L82 PathProgramCache]: Analyzing trace with hash -316946775, now seen corresponding path program 1 times [2019-11-06 22:04:16,307 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:16,308 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105998265] [2019-11-06 22:04:16,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,592 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:16,734 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105998265] [2019-11-06 22:04:16,734 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:16,734 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:04:16,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018815410] [2019-11-06 22:04:16,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:16,735 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:16,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:16,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:04:16,736 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 6 states. [2019-11-06 22:04:17,159 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:18,379 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:18,994 INFO L93 Difference]: Finished difference Result 363 states and 443 transitions. [2019-11-06 22:04:18,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:04:18,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-11-06 22:04:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:18,998 INFO L225 Difference]: With dead ends: 363 [2019-11-06 22:04:18,998 INFO L226 Difference]: Without dead ends: 253 [2019-11-06 22:04:18,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:04:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-11-06 22:04:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 212. [2019-11-06 22:04:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-11-06 22:04:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 240 transitions. [2019-11-06 22:04:19,056 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 240 transitions. Word has length 64 [2019-11-06 22:04:19,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:19,057 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 240 transitions. [2019-11-06 22:04:19,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 240 transitions. [2019-11-06 22:04:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 22:04:19,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:19,059 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:19,059 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:19,059 INFO L82 PathProgramCache]: Analyzing trace with hash 924041624, now seen corresponding path program 1 times [2019-11-06 22:04:19,059 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:19,060 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472062349] [2019-11-06 22:04:19,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,463 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:19,568 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472062349] [2019-11-06 22:04:19,569 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:19,569 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:04:19,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041362556] [2019-11-06 22:04:19,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:04:19,570 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:04:19,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:19,571 INFO L87 Difference]: Start difference. First operand 212 states and 240 transitions. Second operand 12 states. [2019-11-06 22:04:20,178 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:20,562 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:20,868 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:21,161 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:21,759 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:22,773 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:23,162 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:23,456 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:23,781 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:24,121 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:24,398 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:25,936 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:26,384 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:27,131 INFO L93 Difference]: Finished difference Result 745 states and 951 transitions. [2019-11-06 22:04:27,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:04:27,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2019-11-06 22:04:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:27,137 INFO L225 Difference]: With dead ends: 745 [2019-11-06 22:04:27,138 INFO L226 Difference]: Without dead ends: 557 [2019-11-06 22:04:27,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:04:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2019-11-06 22:04:27,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 499. [2019-11-06 22:04:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-11-06 22:04:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 583 transitions. [2019-11-06 22:04:27,233 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 583 transitions. Word has length 78 [2019-11-06 22:04:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:27,234 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 583 transitions. [2019-11-06 22:04:27,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:04:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 583 transitions. [2019-11-06 22:04:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:04:27,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:27,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:27,239 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1813775950, now seen corresponding path program 1 times [2019-11-06 22:04:27,239 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:27,240 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854371605] [2019-11-06 22:04:27,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,555 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-06 22:04:27,786 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854371605] [2019-11-06 22:04:27,786 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407903537] [2019-11-06 22:04:27,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-06 22:04:28,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:28,214 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:28,214 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-11-06 22:04:28,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661922529] [2019-11-06 22:04:28,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:28,216 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:28,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:28,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:04:28,216 INFO L87 Difference]: Start difference. First operand 499 states and 583 transitions. Second operand 8 states. [2019-11-06 22:04:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:29,547 INFO L93 Difference]: Finished difference Result 1250 states and 1614 transitions. [2019-11-06 22:04:29,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:04:29,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2019-11-06 22:04:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:29,553 INFO L225 Difference]: With dead ends: 1250 [2019-11-06 22:04:29,554 INFO L226 Difference]: Without dead ends: 892 [2019-11-06 22:04:29,556 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:04:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-11-06 22:04:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 821. [2019-11-06 22:04:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-11-06 22:04:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1002 transitions. [2019-11-06 22:04:29,713 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1002 transitions. Word has length 136 [2019-11-06 22:04:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:29,714 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 1002 transitions. [2019-11-06 22:04:29,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1002 transitions. [2019-11-06 22:04:29,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:04:29,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:29,717 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:29,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:29,928 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash 173885476, now seen corresponding path program 1 times [2019-11-06 22:04:29,929 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:29,930 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945945584] [2019-11-06 22:04:29,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,231 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:04:30,415 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945945584] [2019-11-06 22:04:30,415 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460806948] [2019-11-06 22:04:30,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:04:30,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:04:30,630 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:30,631 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-11-06 22:04:30,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989444731] [2019-11-06 22:04:30,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:30,632 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:30,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:04:30,632 INFO L87 Difference]: Start difference. First operand 821 states and 1002 transitions. Second operand 6 states. [2019-11-06 22:04:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:30,844 INFO L93 Difference]: Finished difference Result 1646 states and 2084 transitions. [2019-11-06 22:04:30,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:04:30,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-11-06 22:04:30,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:30,850 INFO L225 Difference]: With dead ends: 1646 [2019-11-06 22:04:30,851 INFO L226 Difference]: Without dead ends: 849 [2019-11-06 22:04:30,854 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:04:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2019-11-06 22:04:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 841. [2019-11-06 22:04:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2019-11-06 22:04:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1026 transitions. [2019-11-06 22:04:31,046 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1026 transitions. Word has length 143 [2019-11-06 22:04:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:31,047 INFO L462 AbstractCegarLoop]: Abstraction has 841 states and 1026 transitions. [2019-11-06 22:04:31,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1026 transitions. [2019-11-06 22:04:31,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:04:31,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:31,050 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:31,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:31,263 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:31,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1445089438, now seen corresponding path program 1 times [2019-11-06 22:04:31,264 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:31,264 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876258584] [2019-11-06 22:04:31,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,587 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:04:31,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876258584] [2019-11-06 22:04:31,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633098969] [2019-11-06 22:04:31,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:32,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:04:32,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 22:04:32,127 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:32,127 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-11-06 22:04:32,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564402610] [2019-11-06 22:04:32,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:04:32,128 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:32,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:04:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:32,133 INFO L87 Difference]: Start difference. First operand 841 states and 1026 transitions. Second operand 5 states. [2019-11-06 22:04:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:32,322 INFO L93 Difference]: Finished difference Result 1482 states and 1850 transitions. [2019-11-06 22:04:32,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:32,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-11-06 22:04:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:32,327 INFO L225 Difference]: With dead ends: 1482 [2019-11-06 22:04:32,327 INFO L226 Difference]: Without dead ends: 665 [2019-11-06 22:04:32,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-11-06 22:04:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2019-11-06 22:04:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-11-06 22:04:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 804 transitions. [2019-11-06 22:04:32,463 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 804 transitions. Word has length 143 [2019-11-06 22:04:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:32,463 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 804 transitions. [2019-11-06 22:04:32,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:04:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 804 transitions. [2019-11-06 22:04:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:04:32,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:32,465 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:32,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:32,677 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash -416837817, now seen corresponding path program 1 times [2019-11-06 22:04:32,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:32,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050160413] [2019-11-06 22:04:32,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:32,997 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 22:04:33,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050160413] [2019-11-06 22:04:33,173 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842591204] [2019-11-06 22:04:33,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:33,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:04:33,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:33,530 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:33,530 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-11-06 22:04:33,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601813827] [2019-11-06 22:04:33,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-06 22:04:33,531 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:33,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-06 22:04:33,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:04:33,532 INFO L87 Difference]: Start difference. First operand 665 states and 804 transitions. Second operand 17 states. [2019-11-06 22:04:34,282 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:35,142 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:36,234 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:36,599 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:36,902 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:37,441 WARN L191 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2019-11-06 22:04:37,798 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:38,095 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:39,010 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:39,319 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:04:39,633 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:39,945 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:40,790 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:41,168 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:41,455 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:41,752 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:43,234 INFO L93 Difference]: Finished difference Result 1352 states and 1730 transitions. [2019-11-06 22:04:43,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-06 22:04:43,235 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 147 [2019-11-06 22:04:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:43,240 INFO L225 Difference]: With dead ends: 1352 [2019-11-06 22:04:43,240 INFO L226 Difference]: Without dead ends: 770 [2019-11-06 22:04:43,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=431, Invalid=1461, Unknown=0, NotChecked=0, Total=1892 [2019-11-06 22:04:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2019-11-06 22:04:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 662. [2019-11-06 22:04:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2019-11-06 22:04:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 795 transitions. [2019-11-06 22:04:43,363 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 795 transitions. Word has length 147 [2019-11-06 22:04:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:43,364 INFO L462 AbstractCegarLoop]: Abstraction has 662 states and 795 transitions. [2019-11-06 22:04:43,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-06 22:04:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 795 transitions. [2019-11-06 22:04:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-06 22:04:43,367 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:43,367 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:43,572 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:43,572 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash -121591931, now seen corresponding path program 1 times [2019-11-06 22:04:43,573 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:43,573 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948963763] [2019-11-06 22:04:43,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,918 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-11-06 22:04:44,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948963763] [2019-11-06 22:04:44,091 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196331478] [2019-11-06 22:04:44,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:44,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:04:44,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:44,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:04:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 79 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:04:44,532 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:44,532 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-06 22:04:44,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79927638] [2019-11-06 22:04:44,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-06 22:04:44,533 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:44,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-06 22:04:44,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:04:44,534 INFO L87 Difference]: Start difference. First operand 662 states and 795 transitions. Second operand 18 states. [2019-11-06 22:04:45,308 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186