java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:15,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:15,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:15,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:15,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:15,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:15,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:15,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:15,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:15,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:15,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:15,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:15,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:15,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:15,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:15,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:15,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:15,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:15,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:15,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:15,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:15,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:15,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:15,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:15,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:15,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:15,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:15,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:15,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:15,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:15,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:15,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:15,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:15,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:15,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:15,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:15,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:15,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:15,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:15,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:15,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:15,273 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 [2019-10-14 23:36:15,287 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:15,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:15,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:15,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:15,289 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:15,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:15,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:15,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:15,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:15,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:15,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:15,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:15,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:15,291 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:15,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:15,291 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:15,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:15,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:15,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:15,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:15,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:15,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:15,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:15,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:15,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:15,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:15,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:15,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:15,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:15,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:15,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:15,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:15,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:15,603 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:15,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2019-10-14 23:36:15,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a715e556f/20b23ab6871f405f87a7b7d8ddf4333f/FLAG508b6975c [2019-10-14 23:36:16,163 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:16,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2019-10-14 23:36:16,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a715e556f/20b23ab6871f405f87a7b7d8ddf4333f/FLAG508b6975c [2019-10-14 23:36:16,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a715e556f/20b23ab6871f405f87a7b7d8ddf4333f [2019-10-14 23:36:16,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:16,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:16,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:16,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:16,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:16,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:16" (1/1) ... [2019-10-14 23:36:16,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c381ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:16, skipping insertion in model container [2019-10-14 23:36:16,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:16" (1/1) ... [2019-10-14 23:36:16,469 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:16,521 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:16,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:16,948 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:17,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:17,103 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:17,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17 WrapperNode [2019-10-14 23:36:17,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:17,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:17,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:17,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:17,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (1/1) ... [2019-10-14 23:36:17,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:17,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:17,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:17,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:17,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (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 [2019-10-14 23:36:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:36:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:36:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:18,331 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:18,332 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:18,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:18 BoogieIcfgContainer [2019-10-14 23:36:18,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:18,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:18,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:18,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:18,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:16" (1/3) ... [2019-10-14 23:36:18,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d29fb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:18, skipping insertion in model container [2019-10-14 23:36:18,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:17" (2/3) ... [2019-10-14 23:36:18,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d29fb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:18, skipping insertion in model container [2019-10-14 23:36:18,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:18" (3/3) ... [2019-10-14 23:36:18,341 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2019-10-14 23:36:18,351 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:18,359 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:18,370 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:18,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:18,397 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:18,397 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:18,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:18,398 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:18,398 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:18,398 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:18,398 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-10-14 23:36:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:36:18,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:18,433 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:18,434 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2019-10-14 23:36:18,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:18,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575631852] [2019-10-14 23:36:18,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:18,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:18,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,128 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:19,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575631852] [2019-10-14 23:36:19,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:19,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:19,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107828406] [2019-10-14 23:36:19,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:19,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:19,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:19,257 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2019-10-14 23:36:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:20,547 INFO L93 Difference]: Finished difference Result 354 states and 460 transitions. [2019-10-14 23:36:20,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:36:20,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:36:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:20,580 INFO L225 Difference]: With dead ends: 354 [2019-10-14 23:36:20,580 INFO L226 Difference]: Without dead ends: 196 [2019-10-14 23:36:20,587 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-10-14 23:36:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2019-10-14 23:36:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-14 23:36:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2019-10-14 23:36:20,700 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2019-10-14 23:36:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:20,701 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2019-10-14 23:36:20,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2019-10-14 23:36:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:20,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:20,705 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] [2019-10-14 23:36:20,705 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2019-10-14 23:36:20,706 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:20,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259604711] [2019-10-14 23:36:20,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:20,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:20,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,080 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:21,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259604711] [2019-10-14 23:36:21,127 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:21,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:36:21,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025468356] [2019-10-14 23:36:21,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:36:21,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:36:21,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:21,139 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 5 states. [2019-10-14 23:36:21,665 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:22,791 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2019-10-14 23:36:22,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:36:22,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:36:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:22,798 INFO L225 Difference]: With dead ends: 295 [2019-10-14 23:36:22,798 INFO L226 Difference]: Without dead ends: 186 [2019-10-14 23:36:22,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-14 23:36:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2019-10-14 23:36:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-14 23:36:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2019-10-14 23:36:22,842 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2019-10-14 23:36:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:22,842 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2019-10-14 23:36:22,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:36:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2019-10-14 23:36:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:36:22,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:22,845 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] [2019-10-14 23:36:22,845 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:22,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2019-10-14 23:36:22,846 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:22,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523818031] [2019-10-14 23:36:22,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:22,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:22,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,175 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:23,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523818031] [2019-10-14 23:36:23,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:23,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:23,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694346379] [2019-10-14 23:36:23,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:23,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:23,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:23,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:23,264 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 9 states. [2019-10-14 23:36:23,831 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:24,157 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:24,428 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:24,680 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:26,303 INFO L93 Difference]: Finished difference Result 308 states and 386 transitions. [2019-10-14 23:36:26,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:36:26,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-14 23:36:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:26,309 INFO L225 Difference]: With dead ends: 308 [2019-10-14 23:36:26,309 INFO L226 Difference]: Without dead ends: 186 [2019-10-14 23:36:26,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:36:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-14 23:36:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2019-10-14 23:36:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-14 23:36:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-10-14 23:36:26,352 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2019-10-14 23:36:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:26,352 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-10-14 23:36:26,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-10-14 23:36:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-14 23:36:26,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:26,356 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:26,356 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2019-10-14 23:36:26,357 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:26,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594207481] [2019-10-14 23:36:26,357 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:26,357 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:26,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,660 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:26,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594207481] [2019-10-14 23:36:26,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:26,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:36:26,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370436707] [2019-10-14 23:36:26,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:36:26,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:26,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:36:26,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:26,781 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 7 states. [2019-10-14 23:36:27,146 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:28,542 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:29,549 INFO L93 Difference]: Finished difference Result 418 states and 526 transitions. [2019-10-14 23:36:29,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:29,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2019-10-14 23:36:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:29,554 INFO L225 Difference]: With dead ends: 418 [2019-10-14 23:36:29,554 INFO L226 Difference]: Without dead ends: 296 [2019-10-14 23:36:29,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-10-14 23:36:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2019-10-14 23:36:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-10-14 23:36:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2019-10-14 23:36:29,613 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2019-10-14 23:36:29,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:29,614 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2019-10-14 23:36:29,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:36:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2019-10-14 23:36:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:36:29,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:29,616 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:29,616 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:29,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:29,617 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2019-10-14 23:36:29,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:29,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419576179] [2019-10-14 23:36:29,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:29,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:29,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:29,958 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:30,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419576179] [2019-10-14 23:36:30,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:30,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:30,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252880251] [2019-10-14 23:36:30,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:30,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:30,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:30,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:30,071 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 9 states. [2019-10-14 23:36:30,621 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:31,762 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:32,157 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:32,796 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:33,058 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:34,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:34,521 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2019-10-14 23:36:34,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:36:34,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2019-10-14 23:36:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:34,527 INFO L225 Difference]: With dead ends: 737 [2019-10-14 23:36:34,527 INFO L226 Difference]: Without dead ends: 518 [2019-10-14 23:36:34,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2019-10-14 23:36:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 442. [2019-10-14 23:36:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-10-14 23:36:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2019-10-14 23:36:34,641 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2019-10-14 23:36:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:34,643 INFO L462 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2019-10-14 23:36:34,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:34,643 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2019-10-14 23:36:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:36:34,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:34,646 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:34,647 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2019-10-14 23:36:34,648 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:34,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626102421] [2019-10-14 23:36:34,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:34,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:34,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:34,969 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:35,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626102421] [2019-10-14 23:36:35,098 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:35,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:35,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770390366] [2019-10-14 23:36:35,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:35,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:35,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:35,100 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 10 states. [2019-10-14 23:36:35,655 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:36,956 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:38,207 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:38,467 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:38,753 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:39,206 INFO L93 Difference]: Finished difference Result 970 states and 1183 transitions. [2019-10-14 23:36:39,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:39,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2019-10-14 23:36:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:39,211 INFO L225 Difference]: With dead ends: 970 [2019-10-14 23:36:39,211 INFO L226 Difference]: Without dead ends: 556 [2019-10-14 23:36:39,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:36:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2019-10-14 23:36:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 441. [2019-10-14 23:36:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-14 23:36:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2019-10-14 23:36:39,309 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2019-10-14 23:36:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:39,309 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2019-10-14 23:36:39,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2019-10-14 23:36:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:36:39,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:39,312 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:39,312 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:39,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:39,312 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2019-10-14 23:36:39,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:39,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803126228] [2019-10-14 23:36:39,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,575 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:39,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803126228] [2019-10-14 23:36:39,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:39,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:39,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891543549] [2019-10-14 23:36:39,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:39,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:39,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:39,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:39,777 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 10 states. [2019-10-14 23:36:40,878 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:41,172 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:41,436 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,690 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:43,076 INFO L93 Difference]: Finished difference Result 977 states and 1216 transitions. [2019-10-14 23:36:43,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:43,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2019-10-14 23:36:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:43,084 INFO L225 Difference]: With dead ends: 977 [2019-10-14 23:36:43,084 INFO L226 Difference]: Without dead ends: 564 [2019-10-14 23:36:43,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-14 23:36:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 451. [2019-10-14 23:36:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-10-14 23:36:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2019-10-14 23:36:43,205 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2019-10-14 23:36:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:43,206 INFO L462 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2019-10-14 23:36:43,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2019-10-14 23:36:43,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:36:43,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:43,210 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:43,211 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:43,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2019-10-14 23:36:43,211 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:43,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147730100] [2019-10-14 23:36:43,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:43,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:43,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,515 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:43,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147730100] [2019-10-14 23:36:43,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:43,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:43,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059634529] [2019-10-14 23:36:43,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:43,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:43,674 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 12 states. [2019-10-14 23:36:44,603 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:44,859 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:45,114 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:45,914 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:46,185 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:46,440 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:48,059 INFO L93 Difference]: Finished difference Result 997 states and 1238 transitions. [2019-10-14 23:36:48,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:48,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2019-10-14 23:36:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:48,065 INFO L225 Difference]: With dead ends: 997 [2019-10-14 23:36:48,066 INFO L226 Difference]: Without dead ends: 574 [2019-10-14 23:36:48,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-10-14 23:36:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 459. [2019-10-14 23:36:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-14 23:36:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2019-10-14 23:36:48,157 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2019-10-14 23:36:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:48,158 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2019-10-14 23:36:48,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2019-10-14 23:36:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:36:48,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:48,160 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:48,160 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2019-10-14 23:36:48,161 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:48,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726138731] [2019-10-14 23:36:48,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:48,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:48,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,458 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:48,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726138731] [2019-10-14 23:36:48,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:48,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:48,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105267458] [2019-10-14 23:36:48,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:48,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:48,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:48,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:48,681 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 8 states. [2019-10-14 23:36:49,107 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:49,661 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:52,347 INFO L93 Difference]: Finished difference Result 1365 states and 1751 transitions. [2019-10-14 23:36:52,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:52,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2019-10-14 23:36:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:52,356 INFO L225 Difference]: With dead ends: 1365 [2019-10-14 23:36:52,357 INFO L226 Difference]: Without dead ends: 934 [2019-10-14 23:36:52,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:36:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2019-10-14 23:36:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 789. [2019-10-14 23:36:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-14 23:36:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 921 transitions. [2019-10-14 23:36:52,507 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 921 transitions. Word has length 109 [2019-10-14 23:36:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:52,508 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 921 transitions. [2019-10-14 23:36:52,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 921 transitions. [2019-10-14 23:36:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:36:52,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:52,510 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:52,511 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:52,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2019-10-14 23:36:52,511 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:52,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766210213] [2019-10-14 23:36:52,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:52,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:52,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,825 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:36:53,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766210213] [2019-10-14 23:36:53,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740813770] [2019-10-14 23:36:53,244 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 [2019-10-14 23:36:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:36:53,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:36:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:53,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:36:53,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-14 23:36:53,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079591487] [2019-10-14 23:36:53,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:53,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:53,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:53,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:53,631 INFO L87 Difference]: Start difference. First operand 789 states and 921 transitions. Second operand 8 states. [2019-10-14 23:36:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:54,109 INFO L93 Difference]: Finished difference Result 1513 states and 1777 transitions. [2019-10-14 23:36:54,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:36:54,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2019-10-14 23:36:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:54,114 INFO L225 Difference]: With dead ends: 1513 [2019-10-14 23:36:54,114 INFO L226 Difference]: Without dead ends: 752 [2019-10-14 23:36:54,117 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-14 23:36:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2019-10-14 23:36:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-10-14 23:36:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 862 transitions. [2019-10-14 23:36:54,256 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 862 transitions. Word has length 113 [2019-10-14 23:36:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:54,257 INFO L462 AbstractCegarLoop]: Abstraction has 752 states and 862 transitions. [2019-10-14 23:36:54,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 862 transitions. [2019-10-14 23:36:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-14 23:36:54,260 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:54,260 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:54,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:36:54,466 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1271659967, now seen corresponding path program 1 times [2019-10-14 23:36:54,467 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:54,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234404765] [2019-10-14 23:36:54,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,840 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-14 23:36:55,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234404765] [2019-10-14 23:36:55,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624502614] [2019-10-14 23:36:55,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:36:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:55,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:36:55,353 INFO L279 TraceCheckSpWp]: Computing forward predicates...