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_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:41,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:41,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:41,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:41,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:41,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:41,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:41,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:41,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:41,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:41,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:41,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:41,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:41,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:41,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:41,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:41,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:41,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:41,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:41,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:41,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:41,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:41,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:41,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:41,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:41,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:41,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:41,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:41,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:41,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:41,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:41,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:41,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:41,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:41,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:41,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:41,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:41,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:41,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:41,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:41,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:41,558 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 [2019-09-20 13:07:41,591 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:41,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:41,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:41,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:41,593 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:41,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:41,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:41,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:41,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:41,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:41,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:41,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:41,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:41,595 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:41,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:41,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:41,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:41,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:41,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:41,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:41,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:41,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:41,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:41,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:41,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:41,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:41,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:41,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:41,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:41,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:41,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:41,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:41,682 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:41,683 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:41,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-09-20 13:07:41,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315ea6c3c/859a53bc957b4d2383c7599df3d40a13/FLAG017289592 [2019-09-20 13:07:42,324 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:42,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-09-20 13:07:42,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315ea6c3c/859a53bc957b4d2383c7599df3d40a13/FLAG017289592 [2019-09-20 13:07:42,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315ea6c3c/859a53bc957b4d2383c7599df3d40a13 [2019-09-20 13:07:42,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:42,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:42,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:42,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:42,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:42,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7b037a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42, skipping insertion in model container [2019-09-20 13:07:42,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,597 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:42,663 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:43,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:43,171 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:43,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:43,357 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:43,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43 WrapperNode [2019-09-20 13:07:43,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:43,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:43,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:43,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:43,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (1/1) ... [2019-09-20 13:07:43,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:43,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:43,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:43,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:43,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (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 [2019-09-20 13:07:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:43,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:43,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:07:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:07:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:07:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:07:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:07:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:07:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:44,691 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:44,691 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:44,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:44 BoogieIcfgContainer [2019-09-20 13:07:44,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:44,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:44,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:44,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:44,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:42" (1/3) ... [2019-09-20 13:07:44,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63592b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:44, skipping insertion in model container [2019-09-20 13:07:44,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:43" (2/3) ... [2019-09-20 13:07:44,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63592b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:44, skipping insertion in model container [2019-09-20 13:07:44,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:44" (3/3) ... [2019-09-20 13:07:44,702 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-09-20 13:07:44,712 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:44,723 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:44,740 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:44,772 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:44,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:44,773 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:44,773 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:44,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:44,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:44,774 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:44,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:44,774 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:44,796 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-09-20 13:07:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:44,809 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:44,810 INFO L407 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] [2019-09-20 13:07:44,812 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2019-09-20 13:07:44,820 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:44,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:44,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:44,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:44,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:45,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:45,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:45,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:45,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:45,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:45,250 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-09-20 13:07:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:45,292 INFO L93 Difference]: Finished difference Result 292 states and 361 transitions. [2019-09-20 13:07:45,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:45,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:45,308 INFO L225 Difference]: With dead ends: 292 [2019-09-20 13:07:45,308 INFO L226 Difference]: Without dead ends: 148 [2019-09-20 13:07:45,313 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-09-20 13:07:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-09-20 13:07:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-20 13:07:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2019-09-20 13:07:45,375 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2019-09-20 13:07:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:45,376 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2019-09-20 13:07:45,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2019-09-20 13:07:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:45,380 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:45,381 INFO L407 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] [2019-09-20 13:07:45,381 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:45,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2019-09-20 13:07:45,382 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:45,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:45,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:45,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:45,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:45,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:45,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:45,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:45,495 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 3 states. [2019-09-20 13:07:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:45,520 INFO L93 Difference]: Finished difference Result 231 states and 271 transitions. [2019-09-20 13:07:45,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:45,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:45,523 INFO L225 Difference]: With dead ends: 231 [2019-09-20 13:07:45,523 INFO L226 Difference]: Without dead ends: 139 [2019-09-20 13:07:45,525 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-20 13:07:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-20 13:07:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-20 13:07:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-09-20 13:07:45,542 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2019-09-20 13:07:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:45,542 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-09-20 13:07:45,542 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-09-20 13:07:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:07:45,545 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:45,545 INFO L407 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] [2019-09-20 13:07:45,546 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2019-09-20 13:07:45,546 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:45,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:45,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:45,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:45,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:45,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:45,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:45,733 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 7 states. [2019-09-20 13:07:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,312 INFO L93 Difference]: Finished difference Result 417 states and 506 transitions. [2019-09-20 13:07:46,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:46,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:07:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,323 INFO L225 Difference]: With dead ends: 417 [2019-09-20 13:07:46,324 INFO L226 Difference]: Without dead ends: 306 [2019-09-20 13:07:46,329 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:07:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-09-20 13:07:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 294. [2019-09-20 13:07:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-20 13:07:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2019-09-20 13:07:46,400 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2019-09-20 13:07:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,400 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2019-09-20 13:07:46,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2019-09-20 13:07:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:07:46,411 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,411 INFO L407 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] [2019-09-20 13:07:46,413 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2019-09-20 13:07:46,414 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:46,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:46,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:46,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:46,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:46,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:46,628 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 7 states. [2019-09-20 13:07:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:47,458 INFO L93 Difference]: Finished difference Result 744 states and 968 transitions. [2019-09-20 13:07:47,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:47,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:07:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:47,464 INFO L225 Difference]: With dead ends: 744 [2019-09-20 13:07:47,465 INFO L226 Difference]: Without dead ends: 478 [2019-09-20 13:07:47,468 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-20 13:07:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 424. [2019-09-20 13:07:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-20 13:07:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 511 transitions. [2019-09-20 13:07:47,549 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 511 transitions. Word has length 70 [2019-09-20 13:07:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:47,549 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 511 transitions. [2019-09-20 13:07:47,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 511 transitions. [2019-09-20 13:07:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:47,552 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:47,553 INFO L407 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] [2019-09-20 13:07:47,553 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:47,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2019-09-20 13:07:47,553 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:47,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:47,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:47,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:47,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:47,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:47,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:47,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:47,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:47,644 INFO L87 Difference]: Start difference. First operand 424 states and 511 transitions. Second operand 6 states. [2019-09-20 13:07:47,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:47,689 INFO L93 Difference]: Finished difference Result 830 states and 1019 transitions. [2019-09-20 13:07:47,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:47,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:07:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:47,693 INFO L225 Difference]: With dead ends: 830 [2019-09-20 13:07:47,694 INFO L226 Difference]: Without dead ends: 434 [2019-09-20 13:07:47,695 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-09-20 13:07:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2019-09-20 13:07:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-20 13:07:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-09-20 13:07:47,724 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2019-09-20 13:07:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:47,725 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-09-20 13:07:47,725 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-09-20 13:07:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:47,727 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:47,728 INFO L407 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] [2019-09-20 13:07:47,728 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2019-09-20 13:07:47,728 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:47,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:47,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:47,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:47,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:47,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:47,837 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:47,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:47,838 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 8 states. [2019-09-20 13:07:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:47,887 INFO L93 Difference]: Finished difference Result 854 states and 1058 transitions. [2019-09-20 13:07:47,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:47,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-20 13:07:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:47,892 INFO L225 Difference]: With dead ends: 854 [2019-09-20 13:07:47,892 INFO L226 Difference]: Without dead ends: 448 [2019-09-20 13:07:47,894 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-09-20 13:07:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442. [2019-09-20 13:07:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-09-20 13:07:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2019-09-20 13:07:47,929 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2019-09-20 13:07:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:47,931 INFO L475 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2019-09-20 13:07:47,931 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2019-09-20 13:07:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:47,933 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:47,933 INFO L407 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] [2019-09-20 13:07:47,934 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:47,935 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2019-09-20 13:07:47,935 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:47,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:47,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:47,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:48,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:48,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:48,027 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:48,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:48,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:48,028 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 4 states. [2019-09-20 13:07:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:48,362 INFO L93 Difference]: Finished difference Result 1416 states and 1774 transitions. [2019-09-20 13:07:48,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:48,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-20 13:07:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:48,370 INFO L225 Difference]: With dead ends: 1416 [2019-09-20 13:07:48,370 INFO L226 Difference]: Without dead ends: 1002 [2019-09-20 13:07:48,372 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-09-20 13:07:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 985. [2019-09-20 13:07:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2019-09-20 13:07:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1208 transitions. [2019-09-20 13:07:48,450 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1208 transitions. Word has length 93 [2019-09-20 13:07:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:48,451 INFO L475 AbstractCegarLoop]: Abstraction has 985 states and 1208 transitions. [2019-09-20 13:07:48,451 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1208 transitions. [2019-09-20 13:07:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:07:48,454 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:48,455 INFO L407 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] [2019-09-20 13:07:48,455 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2019-09-20 13:07:48,455 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:48,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:48,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:48,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:48,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:48,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:48,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:48,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:48,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:48,689 INFO L87 Difference]: Start difference. First operand 985 states and 1208 transitions. Second operand 9 states. [2019-09-20 13:07:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:49,952 INFO L93 Difference]: Finished difference Result 2700 states and 3468 transitions. [2019-09-20 13:07:49,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:49,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-20 13:07:49,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:49,988 INFO L225 Difference]: With dead ends: 2700 [2019-09-20 13:07:49,988 INFO L226 Difference]: Without dead ends: 1929 [2019-09-20 13:07:49,995 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-09-20 13:07:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1696. [2019-09-20 13:07:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-09-20 13:07:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2047 transitions. [2019-09-20 13:07:50,276 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2047 transitions. Word has length 97 [2019-09-20 13:07:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:50,279 INFO L475 AbstractCegarLoop]: Abstraction has 1696 states and 2047 transitions. [2019-09-20 13:07:50,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2047 transitions. [2019-09-20 13:07:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-20 13:07:50,290 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:50,290 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:07:50,291 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:50,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2019-09-20 13:07:50,291 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:50,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:50,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:07:50,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:50,591 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:50,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:50,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:50,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-20 13:07:51,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:51,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:51,223 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:51,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:51,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:51,225 INFO L87 Difference]: Start difference. First operand 1696 states and 2047 transitions. Second operand 16 states. [2019-09-20 13:07:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:52,762 INFO L93 Difference]: Finished difference Result 3903 states and 4910 transitions. [2019-09-20 13:07:52,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:52,763 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2019-09-20 13:07:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:52,783 INFO L225 Difference]: With dead ends: 3903 [2019-09-20 13:07:52,783 INFO L226 Difference]: Without dead ends: 2415 [2019-09-20 13:07:52,793 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:07:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2019-09-20 13:07:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2153. [2019-09-20 13:07:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2019-09-20 13:07:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2565 transitions. [2019-09-20 13:07:53,024 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2565 transitions. Word has length 159 [2019-09-20 13:07:53,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:53,025 INFO L475 AbstractCegarLoop]: Abstraction has 2153 states and 2565 transitions. [2019-09-20 13:07:53,026 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:53,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2565 transitions. [2019-09-20 13:07:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-09-20 13:07:53,040 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:53,040 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:07:53,041 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:53,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1275093309, now seen corresponding path program 1 times [2019-09-20 13:07:53,042 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:53,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:53,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:53,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:53,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-09-20 13:07:53,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:53,305 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:53,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:53,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:53,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 205 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:54,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:54,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 16 [2019-09-20 13:07:54,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:54,088 INFO L87 Difference]: Start difference. First operand 2153 states and 2565 transitions. Second operand 16 states. [2019-09-20 13:07:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:57,290 INFO L93 Difference]: Finished difference Result 5647 states and 7773 transitions. [2019-09-20 13:07:57,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-20 13:07:57,291 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 281 [2019-09-20 13:07:57,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:57,319 INFO L225 Difference]: With dead ends: 5647 [2019-09-20 13:07:57,319 INFO L226 Difference]: Without dead ends: 3556 [2019-09-20 13:07:57,329 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2019-09-20 13:07:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2019-09-20 13:07:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 2531. [2019-09-20 13:07:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2019-09-20 13:07:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 2962 transitions. [2019-09-20 13:07:57,541 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 2962 transitions. Word has length 281 [2019-09-20 13:07:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:57,542 INFO L475 AbstractCegarLoop]: Abstraction has 2531 states and 2962 transitions. [2019-09-20 13:07:57,542 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 2962 transitions. [2019-09-20 13:07:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-09-20 13:07:57,552 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:57,553 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:07:57,553 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:57,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1551526319, now seen corresponding path program 1 times [2019-09-20 13:07:57,554 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:57,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:57,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:57,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 98 proven. 53 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-09-20 13:07:57,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:57,843 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:57,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:58,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:58,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 240 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-20 13:07:58,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:58,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:58,372 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:58,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:58,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:58,373 INFO L87 Difference]: Start difference. First operand 2531 states and 2962 transitions. Second operand 20 states. [2019-09-20 13:08:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:00,212 INFO L93 Difference]: Finished difference Result 4828 states and 5698 transitions. [2019-09-20 13:08:00,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:00,213 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 293 [2019-09-20 13:08:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:00,229 INFO L225 Difference]: With dead ends: 4828 [2019-09-20 13:08:00,229 INFO L226 Difference]: Without dead ends: 2539 [2019-09-20 13:08:00,237 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2019-09-20 13:08:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2533. [2019-09-20 13:08:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2533 states. [2019-09-20 13:08:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 2956 transitions. [2019-09-20 13:08:00,494 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 2956 transitions. Word has length 293 [2019-09-20 13:08:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:00,495 INFO L475 AbstractCegarLoop]: Abstraction has 2533 states and 2956 transitions. [2019-09-20 13:08:00,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 2956 transitions. [2019-09-20 13:08:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-09-20 13:08:00,510 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:00,510 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:00,511 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:00,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1355501483, now seen corresponding path program 1 times [2019-09-20 13:08:00,511 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:00,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:00,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-09-20 13:08:00,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:00,819 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:00,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:01,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:01,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 166 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-20 13:08:01,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:01,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:01,294 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:01,295 INFO L87 Difference]: Start difference. First operand 2533 states and 2956 transitions. Second operand 14 states. [2019-09-20 13:08:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:04,287 INFO L93 Difference]: Finished difference Result 5747 states and 7358 transitions. [2019-09-20 13:08:04,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:04,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 294 [2019-09-20 13:08:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:04,315 INFO L225 Difference]: With dead ends: 5747 [2019-09-20 13:08:04,315 INFO L226 Difference]: Without dead ends: 4212 [2019-09-20 13:08:04,323 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2019-09-20 13:08:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3173. [2019-09-20 13:08:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3173 states. [2019-09-20 13:08:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 3703 transitions. [2019-09-20 13:08:04,549 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 3703 transitions. Word has length 294 [2019-09-20 13:08:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:04,551 INFO L475 AbstractCegarLoop]: Abstraction has 3173 states and 3703 transitions. [2019-09-20 13:08:04,551 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 3703 transitions. [2019-09-20 13:08:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-09-20 13:08:04,567 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:04,567 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:04,568 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:04,568 INFO L82 PathProgramCache]: Analyzing trace with hash -360518658, now seen corresponding path program 1 times [2019-09-20 13:08:04,569 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:04,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:04,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:04,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2019-09-20 13:08:04,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:04,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:04,751 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:04,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:04,752 INFO L87 Difference]: Start difference. First operand 3173 states and 3703 transitions. Second operand 3 states. [2019-09-20 13:08:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:04,876 INFO L93 Difference]: Finished difference Result 5116 states and 5984 transitions. [2019-09-20 13:08:04,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:04,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2019-09-20 13:08:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:04,888 INFO L225 Difference]: With dead ends: 5116 [2019-09-20 13:08:04,889 INFO L226 Difference]: Without dead ends: 2005 [2019-09-20 13:08:04,901 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2019-09-20 13:08:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1960. [2019-09-20 13:08:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2019-09-20 13:08:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2249 transitions. [2019-09-20 13:08:05,046 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2249 transitions. Word has length 341 [2019-09-20 13:08:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:05,047 INFO L475 AbstractCegarLoop]: Abstraction has 1960 states and 2249 transitions. [2019-09-20 13:08:05,047 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2249 transitions. [2019-09-20 13:08:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2019-09-20 13:08:05,058 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:05,058 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:05,059 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2098946175, now seen corresponding path program 1 times [2019-09-20 13:08:05,060 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:05,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:05,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:05,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 150 proven. 54 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2019-09-20 13:08:05,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:05,506 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:05,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:05,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:05,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 322 proven. 16 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-09-20 13:08:05,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:05,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2019-09-20 13:08:05,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-20 13:08:06,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-20 13:08:06,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-09-20 13:08:06,000 INFO L87 Difference]: Start difference. First operand 1960 states and 2249 transitions. Second operand 23 states. [2019-09-20 13:08:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:12,434 INFO L93 Difference]: Finished difference Result 6089 states and 7183 transitions. [2019-09-20 13:08:12,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-09-20 13:08:12,435 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 344 [2019-09-20 13:08:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:12,458 INFO L225 Difference]: With dead ends: 6089 [2019-09-20 13:08:12,458 INFO L226 Difference]: Without dead ends: 3988 [2019-09-20 13:08:12,467 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=667, Invalid=4303, Unknown=0, NotChecked=0, Total=4970 [2019-09-20 13:08:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2019-09-20 13:08:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3242. [2019-09-20 13:08:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2019-09-20 13:08:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 3723 transitions. [2019-09-20 13:08:12,709 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 3723 transitions. Word has length 344 [2019-09-20 13:08:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:12,710 INFO L475 AbstractCegarLoop]: Abstraction has 3242 states and 3723 transitions. [2019-09-20 13:08:12,710 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-20 13:08:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 3723 transitions. [2019-09-20 13:08:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2019-09-20 13:08:12,729 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:12,730 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:12,730 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:12,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1427629586, now seen corresponding path program 1 times [2019-09-20 13:08:12,731 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:12,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:12,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:12,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:12,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 110 proven. 16 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2019-09-20 13:08:12,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:12,972 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:13,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:13,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:08:13,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:13,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:13,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2019-09-20 13:08:13,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:13,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:13,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:13,373 INFO L87 Difference]: Start difference. First operand 3242 states and 3723 transitions. Second operand 13 states. [2019-09-20 13:08:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:13,448 INFO L93 Difference]: Finished difference Result 3621 states and 4144 transitions. [2019-09-20 13:08:13,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:13,449 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 353 [2019-09-20 13:08:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:13,452 INFO L225 Difference]: With dead ends: 3621 [2019-09-20 13:08:13,452 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:08:13,462 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:08:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:08:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:08:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:08:13,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 353 [2019-09-20 13:08:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:13,464 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:08:13,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:08:13,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:08:13,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.