/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:00:33,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:00:33,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:00:33,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:00:33,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:00:33,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:00:33,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:00:33,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:00:33,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:00:33,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:00:33,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:00:33,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:00:33,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:00:33,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:00:33,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:00:33,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:00:33,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:00:33,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:00:33,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:00:33,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:00:33,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:00:33,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:00:33,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:00:33,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:00:33,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:00:33,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:00:33,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:00:33,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:00:33,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:00:33,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:00:33,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:00:33,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:00:33,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:00:33,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:00:33,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:00:33,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:00:33,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:00:33,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:00:33,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:00:33,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:00:33,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:00:33,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:00:33,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:00:33,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:00:33,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:00:33,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:00:33,344 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:00:33,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:00:33,345 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:00:33,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:00:33,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:00:33,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:00:33,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:00:33,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:00:33,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:00:33,346 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:00:33,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:00:33,346 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:00:33,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:00:33,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:00:33,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:00:33,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:00:33,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:00:33,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:33,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:00:33,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:00:33,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:00:33,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:00:33,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:00:33,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:00:33,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:00:33,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:00:33,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:00:33,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:00:33,652 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:00:33,652 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:00:33,653 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-11-06 22:00:33,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfecad429/e5710f1692c5417f9ad2661938db02d7/FLAGdc4e065f7 [2019-11-06 22:00:34,280 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:00:34,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-11-06 22:00:34,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfecad429/e5710f1692c5417f9ad2661938db02d7/FLAGdc4e065f7 [2019-11-06 22:00:34,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfecad429/e5710f1692c5417f9ad2661938db02d7 [2019-11-06 22:00:34,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:00:34,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:00:34,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:34,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:00:34,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:00:34,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:34" (1/1) ... [2019-11-06 22:00:34,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f3de09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:34, skipping insertion in model container [2019-11-06 22:00:34,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:34" (1/1) ... [2019-11-06 22:00:34,608 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:00:34,648 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:00:35,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:35,054 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:00:35,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:35,205 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:00:35,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35 WrapperNode [2019-11-06 22:00:35,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:35,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:00:35,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:00:35,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:00:35,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... [2019-11-06 22:00:35,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:00:35,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:00:35,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:00:35,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:00:35,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:00:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:00:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:00:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:00:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:00:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:00:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:00:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:00:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:00:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:00:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:00:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:00:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:00:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:00:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:00:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:00:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:00:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:00:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:00:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:00:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:00:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:00:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:00:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:00:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:00:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:00:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:00:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:00:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:00:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:00:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:00:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:00:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:00:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:00:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:00:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:00:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:00:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:00:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:00:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:00:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:00:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:00:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:00:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:00:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:00:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:00:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:00:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:00:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:00:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:00:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:00:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:00:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:00:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:00:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:00:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:00:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:00:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:00:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:00:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:00:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:00:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:00:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:00:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:00:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:00:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:00:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:00:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:00:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:00:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:00:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:00:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:00:36,575 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:00:36,575 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:00:36,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:36 BoogieIcfgContainer [2019-11-06 22:00:36,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:00:36,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:00:36,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:00:36,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:00:36,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:34" (1/3) ... [2019-11-06 22:00:36,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675f9dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:36, skipping insertion in model container [2019-11-06 22:00:36,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:35" (2/3) ... [2019-11-06 22:00:36,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675f9dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:36, skipping insertion in model container [2019-11-06 22:00:36,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:36" (3/3) ... [2019-11-06 22:00:36,588 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2019-11-06 22:00:36,597 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:00:36,607 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:00:36,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:00:36,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:00:36,653 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:00:36,653 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:00:36,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:00:36,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:00:36,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:00:36,654 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:00:36,654 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:00:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-11-06 22:00:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:00:36,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:36,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:36,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash 291336746, now seen corresponding path program 1 times [2019-11-06 22:00:36,715 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:36,716 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441693532] [2019-11-06 22:00:36,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,421 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:37,547 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441693532] [2019-11-06 22:00:37,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:37,549 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:00:37,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477718386] [2019-11-06 22:00:37,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:00:37,565 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:37,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:00:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:37,584 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2019-11-06 22:00:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:38,809 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2019-11-06 22:00:38,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:00:38,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:00:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:38,825 INFO L225 Difference]: With dead ends: 318 [2019-11-06 22:00:38,825 INFO L226 Difference]: Without dead ends: 171 [2019-11-06 22:00:38,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-06 22:00:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 138. [2019-11-06 22:00:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-06 22:00:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2019-11-06 22:00:38,920 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2019-11-06 22:00:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:38,921 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2019-11-06 22:00:38,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:00:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2019-11-06 22:00:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:00:38,925 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:38,925 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:38,925 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:38,926 INFO L82 PathProgramCache]: Analyzing trace with hash -951540010, now seen corresponding path program 1 times [2019-11-06 22:00:38,926 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:38,926 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009996831] [2019-11-06 22:00:38,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,268 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:39,343 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009996831] [2019-11-06 22:00:39,343 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:39,343 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:00:39,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025869630] [2019-11-06 22:00:39,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:00:39,348 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:39,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:00:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:00:39,349 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 4 states. [2019-11-06 22:00:39,812 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:40,737 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2019-11-06 22:00:40,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:00:40,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:00:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:40,740 INFO L225 Difference]: With dead ends: 247 [2019-11-06 22:00:40,740 INFO L226 Difference]: Without dead ends: 155 [2019-11-06 22:00:40,742 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:00:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-06 22:00:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2019-11-06 22:00:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-06 22:00:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2019-11-06 22:00:40,777 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 53 [2019-11-06 22:00:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:40,778 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2019-11-06 22:00:40,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:00:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2019-11-06 22:00:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 22:00:40,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:40,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:40,781 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:40,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1718267444, now seen corresponding path program 1 times [2019-11-06 22:00:40,782 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:40,782 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610033514] [2019-11-06 22:00:40,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,120 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:41,205 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610033514] [2019-11-06 22:00:41,205 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:41,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:41,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561679210] [2019-11-06 22:00:41,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:41,206 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:41,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:41,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:41,207 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 8 states. [2019-11-06 22:00:41,688 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:42,014 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:42,326 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:42,585 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:43,863 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2019-11-06 22:00:43,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:43,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-06 22:00:43,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:43,867 INFO L225 Difference]: With dead ends: 260 [2019-11-06 22:00:43,867 INFO L226 Difference]: Without dead ends: 155 [2019-11-06 22:00:43,868 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-06 22:00:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2019-11-06 22:00:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-06 22:00:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2019-11-06 22:00:43,905 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 58 [2019-11-06 22:00:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:43,906 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2019-11-06 22:00:43,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2019-11-06 22:00:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 22:00:43,909 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:43,909 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:43,909 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash -625773272, now seen corresponding path program 1 times [2019-11-06 22:00:43,910 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:43,910 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838695221] [2019-11-06 22:00:43,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,207 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:44,320 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838695221] [2019-11-06 22:00:44,320 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:44,320 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:00:44,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023897636] [2019-11-06 22:00:44,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:00:44,322 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:44,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:00:44,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:00:44,323 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand 6 states. [2019-11-06 22:00:44,652 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:45,956 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:46,557 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2019-11-06 22:00:46,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:00:46,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-11-06 22:00:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:46,561 INFO L225 Difference]: With dead ends: 369 [2019-11-06 22:00:46,561 INFO L226 Difference]: Without dead ends: 264 [2019-11-06 22:00:46,562 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:00:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-11-06 22:00:46,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 221. [2019-11-06 22:00:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-06 22:00:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 251 transitions. [2019-11-06 22:00:46,616 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 251 transitions. Word has length 71 [2019-11-06 22:00:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:46,616 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 251 transitions. [2019-11-06 22:00:46,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:00:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 251 transitions. [2019-11-06 22:00:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-06 22:00:46,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:46,619 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:46,619 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:46,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:46,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1888633043, now seen corresponding path program 1 times [2019-11-06 22:00:46,620 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:46,620 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625218924] [2019-11-06 22:00:46,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:46,952 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:47,041 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625218924] [2019-11-06 22:00:47,042 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:47,042 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:47,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566918359] [2019-11-06 22:00:47,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:47,045 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:47,046 INFO L87 Difference]: Start difference. First operand 221 states and 251 transitions. Second operand 8 states. [2019-11-06 22:00:47,493 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:48,918 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:49,238 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:49,542 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:49,803 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:50,649 INFO L93 Difference]: Finished difference Result 588 states and 730 transitions. [2019-11-06 22:00:50,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:00:50,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-11-06 22:00:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:50,654 INFO L225 Difference]: With dead ends: 588 [2019-11-06 22:00:50,654 INFO L226 Difference]: Without dead ends: 391 [2019-11-06 22:00:50,655 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:00:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-11-06 22:00:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 348. [2019-11-06 22:00:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-11-06 22:00:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 403 transitions. [2019-11-06 22:00:50,723 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 403 transitions. Word has length 85 [2019-11-06 22:00:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:50,724 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 403 transitions. [2019-11-06 22:00:50,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 403 transitions. [2019-11-06 22:00:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:50,726 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:50,726 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:50,726 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:50,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:50,727 INFO L82 PathProgramCache]: Analyzing trace with hash 408582233, now seen corresponding path program 1 times [2019-11-06 22:00:50,727 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:50,727 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284125965] [2019-11-06 22:00:50,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,059 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:51,200 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284125965] [2019-11-06 22:00:51,201 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:51,201 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:51,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306193682] [2019-11-06 22:00:51,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:51,202 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:51,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:51,203 INFO L87 Difference]: Start difference. First operand 348 states and 403 transitions. Second operand 10 states. [2019-11-06 22:00:51,658 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:53,144 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:53,485 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:53,767 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:54,039 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:54,428 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:55,853 INFO L93 Difference]: Finished difference Result 799 states and 1008 transitions. [2019-11-06 22:00:55,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:00:55,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-11-06 22:00:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:55,858 INFO L225 Difference]: With dead ends: 799 [2019-11-06 22:00:55,859 INFO L226 Difference]: Without dead ends: 591 [2019-11-06 22:00:55,860 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:00:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-06 22:00:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 519. [2019-11-06 22:00:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-06 22:00:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 610 transitions. [2019-11-06 22:00:55,961 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 610 transitions. Word has length 89 [2019-11-06 22:00:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:55,962 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 610 transitions. [2019-11-06 22:00:55,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 610 transitions. [2019-11-06 22:00:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:55,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:55,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:55,965 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash -514101350, now seen corresponding path program 1 times [2019-11-06 22:00:55,966 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:55,966 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600492539] [2019-11-06 22:00:55,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,233 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:56,387 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600492539] [2019-11-06 22:00:56,387 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:56,387 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:56,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756891630] [2019-11-06 22:00:56,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:56,388 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:56,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:56,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:56,389 INFO L87 Difference]: Start difference. First operand 519 states and 610 transitions. Second operand 8 states. [2019-11-06 22:00:57,361 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:57,625 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:57,905 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:58,829 INFO L93 Difference]: Finished difference Result 962 states and 1177 transitions. [2019-11-06 22:00:58,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:00:58,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-11-06 22:00:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:58,834 INFO L225 Difference]: With dead ends: 962 [2019-11-06 22:00:58,835 INFO L226 Difference]: Without dead ends: 579 [2019-11-06 22:00:58,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-11-06 22:00:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 519. [2019-11-06 22:00:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-06 22:00:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 609 transitions. [2019-11-06 22:00:58,927 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 609 transitions. Word has length 89 [2019-11-06 22:00:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:58,927 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 609 transitions. [2019-11-06 22:00:58,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 609 transitions. [2019-11-06 22:00:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:58,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:58,929 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:58,930 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1358106852, now seen corresponding path program 1 times [2019-11-06 22:00:58,930 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:58,931 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941993730] [2019-11-06 22:00:58,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,198 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:59,381 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941993730] [2019-11-06 22:00:59,381 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:59,381 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:00:59,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448471667] [2019-11-06 22:00:59,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:00:59,387 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:59,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:00:59,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:59,388 INFO L87 Difference]: Start difference. First operand 519 states and 609 transitions. Second operand 12 states. [2019-11-06 22:01:00,061 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:00,321 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:00,570 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:01,354 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:01,608 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:01:01,896 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:02,151 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:03,483 INFO L93 Difference]: Finished difference Result 1063 states and 1302 transitions. [2019-11-06 22:01:03,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:01:03,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-11-06 22:01:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:03,492 INFO L225 Difference]: With dead ends: 1063 [2019-11-06 22:01:03,492 INFO L226 Difference]: Without dead ends: 568 [2019-11-06 22:01:03,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:01:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-11-06 22:01:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 519. [2019-11-06 22:01:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-06 22:01:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 607 transitions. [2019-11-06 22:01:03,636 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 607 transitions. Word has length 89 [2019-11-06 22:01:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:03,637 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 607 transitions. [2019-11-06 22:01:03,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:01:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 607 transitions. [2019-11-06 22:01:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-06 22:01:03,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:03,643 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:03,644 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:03,644 INFO L82 PathProgramCache]: Analyzing trace with hash -967187523, now seen corresponding path program 1 times [2019-11-06 22:01:03,644 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:03,645 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084520185] [2019-11-06 22:01:03,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:03,998 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:04,121 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084520185] [2019-11-06 22:01:04,122 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:04,122 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:01:04,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153129866] [2019-11-06 22:01:04,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:01:04,123 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:04,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:01:04,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:01:04,123 INFO L87 Difference]: Start difference. First operand 519 states and 607 transitions. Second operand 13 states. [2019-11-06 22:01:05,267 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:05,538 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:05,821 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:06,961 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:07,747 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:08,128 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:08,466 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:09,358 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:09,706 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:10,091 INFO L93 Difference]: Finished difference Result 1056 states and 1260 transitions. [2019-11-06 22:01:10,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:01:10,092 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2019-11-06 22:01:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:10,097 INFO L225 Difference]: With dead ends: 1056 [2019-11-06 22:01:10,097 INFO L226 Difference]: Without dead ends: 561 [2019-11-06 22:01:10,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-11-06 22:01:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2019-11-06 22:01:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 519. [2019-11-06 22:01:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-06 22:01:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 595 transitions. [2019-11-06 22:01:10,192 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 595 transitions. Word has length 90 [2019-11-06 22:01:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:10,194 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 595 transitions. [2019-11-06 22:01:10,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 22:01:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 595 transitions. [2019-11-06 22:01:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 22:01:10,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:10,201 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:10,201 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash -129105783, now seen corresponding path program 1 times [2019-11-06 22:01:10,202 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:10,202 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474979803] [2019-11-06 22:01:10,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,537 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 22:01:10,769 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474979803] [2019-11-06 22:01:10,770 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518147662] [2019-11-06 22:01:10,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:01:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-06 22:01:11,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:01:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:01:11,308 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:01:11,309 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-11-06 22:01:11,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853348898] [2019-11-06 22:01:11,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-06 22:01:11,310 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-06 22:01:11,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:01:11,311 INFO L87 Difference]: Start difference. First operand 519 states and 595 transitions. Second operand 19 states. [2019-11-06 22:01:11,930 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:12,942 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:13,291 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189