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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:39:44,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:39:44,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:39:44,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:39:44,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:39:44,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:39:44,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:39:44,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:39:44,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:39:44,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:39:44,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:39:44,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:39:44,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:39:44,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:39:44,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:39:44,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:39:44,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:39:44,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:39:44,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:39:44,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:39:44,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:39:44,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:39:44,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:39:44,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:39:44,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:39:44,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:39:44,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:39:44,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:39:44,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:39:44,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:39:44,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:39:44,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:39:44,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:39:44,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:39:44,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:39:44,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:39:44,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:39:44,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:39:44,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:39:44,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:39:44,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:39:44,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:39:44,955 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:39:44,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:39:44,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:39:44,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:39:44,957 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:39:44,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:39:44,958 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:39:44,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:39:44,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:39:44,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:39:44,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:39:44,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:39:44,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:39:44,959 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:39:44,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:39:44,959 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:39:44,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:39:44,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:39:44,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:39:44,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:39:44,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:39:44,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:44,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:39:44,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:39:44,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:39:44,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:39:44,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:39:44,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:39:44,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:39:45,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:39:45,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:39:45,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:39:45,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:39:45,274 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:39:45,275 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2019-10-13 19:39:45,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc78c7266/224a20dba15a4ec28e68aa4d51d45566/FLAGe8a3d7ea2 [2019-10-13 19:39:45,874 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:39:45,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2019-10-13 19:39:45,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc78c7266/224a20dba15a4ec28e68aa4d51d45566/FLAGe8a3d7ea2 [2019-10-13 19:39:46,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc78c7266/224a20dba15a4ec28e68aa4d51d45566 [2019-10-13 19:39:46,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:39:46,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:39:46,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:46,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:39:46,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:39:46,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:46,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507cfa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46, skipping insertion in model container [2019-10-13 19:39:46,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:46,212 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:39:46,262 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:39:46,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:46,837 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:39:46,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:46,978 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:39:46,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46 WrapperNode [2019-10-13 19:39:46,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:46,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:39:46,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:39:46,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:39:46,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:46,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:47,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:47,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:47,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:47,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:47,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... [2019-10-13 19:39:47,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:39:47,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:39:47,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:39:47,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:39:47,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:47,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:39:47,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:39:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:39:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:39:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:39:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:39:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:39:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:39:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:39:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:39:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:39:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:39:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:39:47,146 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:39:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:39:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:39:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:39:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:39:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:39:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:39:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:39:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:39:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:39:47,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:47,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:39:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:39:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:39:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:39:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:39:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:39:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:39:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:39:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:39:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:39:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:39:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:39:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:39:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:39:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:39:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:39:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:39:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:39:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:39:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:39:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:39:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:39:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:39:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:39:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:39:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:39:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:39:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:39:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:39:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:39:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:39:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:39:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:39:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:39:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:39:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:39:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:39:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:39:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:39:48,266 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:39:48,266 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:39:48,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:48 BoogieIcfgContainer [2019-10-13 19:39:48,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:39:48,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:39:48,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:39:48,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:39:48,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:46" (1/3) ... [2019-10-13 19:39:48,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61134d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:48, skipping insertion in model container [2019-10-13 19:39:48,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:46" (2/3) ... [2019-10-13 19:39:48,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61134d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:48, skipping insertion in model container [2019-10-13 19:39:48,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:48" (3/3) ... [2019-10-13 19:39:48,276 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2019-10-13 19:39:48,286 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:39:48,295 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:39:48,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:39:48,335 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:39:48,335 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:39:48,335 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:39:48,336 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:39:48,336 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:39:48,336 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:39:48,336 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:39:48,336 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:39:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-10-13 19:39:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:39:48,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:48,371 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:48,373 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash -583894042, now seen corresponding path program 1 times [2019-10-13 19:39:48,388 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:48,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864121924] [2019-10-13 19:39:48,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:48,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:48,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,117 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:49,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864121924] [2019-10-13 19:39:49,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:49,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:39:49,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198247635] [2019-10-13 19:39:49,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:39:49,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:49,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:39:49,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:49,253 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2019-10-13 19:39:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:50,402 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2019-10-13 19:39:50,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:39:50,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:39:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:50,420 INFO L225 Difference]: With dead ends: 320 [2019-10-13 19:39:50,420 INFO L226 Difference]: Without dead ends: 173 [2019-10-13 19:39:50,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-13 19:39:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2019-10-13 19:39:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-13 19:39:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2019-10-13 19:39:50,508 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2019-10-13 19:39:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:50,508 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2019-10-13 19:39:50,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:39:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2019-10-13 19:39:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:39:50,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:50,512 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:50,512 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:50,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2008699999, now seen corresponding path program 1 times [2019-10-13 19:39:50,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:50,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264670457] [2019-10-13 19:39:50,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:50,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:50,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,851 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:50,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264670457] [2019-10-13 19:39:50,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:50,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:39:50,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583040680] [2019-10-13 19:39:50,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:39:50,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:50,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:39:50,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:39:50,911 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2019-10-13 19:39:51,354 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:52,177 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2019-10-13 19:39:52,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:39:52,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:39:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:52,182 INFO L225 Difference]: With dead ends: 243 [2019-10-13 19:39:52,182 INFO L226 Difference]: Without dead ends: 157 [2019-10-13 19:39:52,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:39:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-13 19:39:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2019-10-13 19:39:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-13 19:39:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2019-10-13 19:39:52,220 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2019-10-13 19:39:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:52,220 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2019-10-13 19:39:52,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:39:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2019-10-13 19:39:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:39:52,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:52,223 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:52,223 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash 940393630, now seen corresponding path program 1 times [2019-10-13 19:39:52,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:52,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37860845] [2019-10-13 19:39:52,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:52,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:52,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,552 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:52,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37860845] [2019-10-13 19:39:52,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:52,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:39:52,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482214731] [2019-10-13 19:39:52,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:39:52,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:39:52,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:39:52,682 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 8 states. [2019-10-13 19:39:53,118 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:53,480 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:53,756 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:54,044 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:54,930 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:57,035 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2019-10-13 19:39:57,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:39:57,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:39:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:57,045 INFO L225 Difference]: With dead ends: 442 [2019-10-13 19:39:57,045 INFO L226 Difference]: Without dead ends: 337 [2019-10-13 19:39:57,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:39:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-10-13 19:39:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2019-10-13 19:39:57,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2019-10-13 19:39:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2019-10-13 19:39:57,122 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2019-10-13 19:39:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:57,123 INFO L462 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2019-10-13 19:39:57,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:39:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2019-10-13 19:39:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:39:57,126 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:57,126 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:57,126 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash -885199720, now seen corresponding path program 1 times [2019-10-13 19:39:57,127 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:57,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395586975] [2019-10-13 19:39:57,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:57,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:57,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,514 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:57,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395586975] [2019-10-13 19:39:57,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:57,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:39:57,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60578408] [2019-10-13 19:39:57,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:39:57,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:57,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:39:57,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:39:57,632 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 12 states. [2019-10-13 19:39:58,152 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:58,517 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:58,798 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:59,098 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:59,718 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:00,745 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:01,184 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:01,520 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:01,826 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:02,191 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:02,590 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:02,969 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:03,410 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:05,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:05,345 INFO L93 Difference]: Finished difference Result 1101 states and 1516 transitions. [2019-10-13 19:40:05,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:05,345 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-13 19:40:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:05,353 INFO L225 Difference]: With dead ends: 1101 [2019-10-13 19:40:05,353 INFO L226 Difference]: Without dead ends: 853 [2019-10-13 19:40:05,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-13 19:40:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 756. [2019-10-13 19:40:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-10-13 19:40:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 962 transitions. [2019-10-13 19:40:05,524 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 962 transitions. Word has length 57 [2019-10-13 19:40:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:05,524 INFO L462 AbstractCegarLoop]: Abstraction has 756 states and 962 transitions. [2019-10-13 19:40:05,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:05,525 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 962 transitions. [2019-10-13 19:40:05,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:40:05,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:05,529 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:05,529 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:05,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1426922018, now seen corresponding path program 1 times [2019-10-13 19:40:05,530 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:05,530 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657077218] [2019-10-13 19:40:05,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:05,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:05,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,818 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:05,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657077218] [2019-10-13 19:40:05,914 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:05,914 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:05,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037421681] [2019-10-13 19:40:05,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:05,915 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:05,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:05,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:05,916 INFO L87 Difference]: Start difference. First operand 756 states and 962 transitions. Second operand 6 states. [2019-10-13 19:40:06,278 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:08,168 INFO L93 Difference]: Finished difference Result 1819 states and 2481 transitions. [2019-10-13 19:40:08,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:40:08,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-13 19:40:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:08,176 INFO L225 Difference]: With dead ends: 1819 [2019-10-13 19:40:08,177 INFO L226 Difference]: Without dead ends: 1087 [2019-10-13 19:40:08,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2019-10-13 19:40:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 996. [2019-10-13 19:40:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2019-10-13 19:40:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1256 transitions. [2019-10-13 19:40:08,401 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1256 transitions. Word has length 61 [2019-10-13 19:40:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:08,402 INFO L462 AbstractCegarLoop]: Abstraction has 996 states and 1256 transitions. [2019-10-13 19:40:08,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1256 transitions. [2019-10-13 19:40:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:40:08,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:08,406 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:08,406 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash -50759536, now seen corresponding path program 1 times [2019-10-13 19:40:08,407 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:08,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125437017] [2019-10-13 19:40:08,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:08,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:08,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,717 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:40:08,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125437017] [2019-10-13 19:40:08,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444006681] [2019-10-13 19:40:08,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:09,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:09,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:40:09,271 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:09,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-13 19:40:09,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997681949] [2019-10-13 19:40:09,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 19:40:09,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:09,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 19:40:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:09,273 INFO L87 Difference]: Start difference. First operand 996 states and 1256 transitions. Second operand 15 states. [2019-10-13 19:40:09,847 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:10,614 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:11,397 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:12,490 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:12,871 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:14,562 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:14,843 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:15,284 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:16,527 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:16,851 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:17,144 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:17,446 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:17,772 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:18,132 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:18,470 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:18,766 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:19,071 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:19,568 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:20,276 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:21,048 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:21,373 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:21,705 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:22,258 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:22,585 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:22,863 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:23,141 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:23,464 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:24,187 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:24,500 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:24,777 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:25,107 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:25,412 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190