./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 21:29:40,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:29:40,339 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 21:29:40,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:29:40,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:29:40,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:29:40,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:29:40,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:29:40,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:29:40,375 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:29:40,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:29:40,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:29:40,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:29:40,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:29:40,377 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:29:40,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:29:40,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:29:40,378 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 21:29:40,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:29:40,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 21:29:40,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:29:40,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:29:40,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:29:40,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:29:40,379 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 21:29:40,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:29:40,380 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:29:40,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:29:40,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:29:40,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:29:40,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:29:40,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:29:40,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:29:40,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:29:40,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:29:40,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:29:40,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:29:40,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:29:40,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:29:40,383 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:29:40,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:29:40,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:29:40,383 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 21:29:40,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:29:40,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:29:40,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:29:40,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:29:40,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:29:40,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2023-11-22 21:29:41,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:29:41,835 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:29:41,836 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2023-11-22 21:29:41,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e52f1204/fe6f612bb37f48afa19ba74558871aa8/FLAGb98db66dd [2023-11-22 21:29:41,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e52f1204/fe6f612bb37f48afa19ba74558871aa8 [2023-11-22 21:29:41,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:29:41,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:29:41,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:29:41,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:29:41,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:29:41,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:29:41" (1/1) ... [2023-11-22 21:29:41,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4b0b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:41, skipping insertion in model container [2023-11-22 21:29:41,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:29:41" (1/1) ... [2023-11-22 21:29:41,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:29:42,066 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2023-11-22 21:29:42,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:29:42,263 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:29:42,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-22 21:29:42,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2023-11-22 21:29:42,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [77] [2023-11-22 21:29:42,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [443] [2023-11-22 21:29:42,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2020] [2023-11-22 21:29:42,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2682] [2023-11-22 21:29:42,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2775] [2023-11-22 21:29:42,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2893] [2023-11-22 21:29:42,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2931] [2023-11-22 21:29:42,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3279] [2023-11-22 21:29:42,287 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2023-11-22 21:29:42,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:29:42,400 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:29:42,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42 WrapperNode [2023-11-22 21:29:42,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:29:42,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:29:42,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:29:42,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:29:42,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,479 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 838 [2023-11-22 21:29:42,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:29:42,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:29:42,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:29:42,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:29:42,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,495 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,519 INFO L189 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4] [2023-11-22 21:29:42,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:29:42,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:29:42,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:29:42,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:29:42,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:29:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:42,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 21:29:42,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 21:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 21:29:42,688 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 21:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 21:29:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 21:29:42,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 21:29:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 21:29:42,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 21:29:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 21:29:42,690 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 21:29:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 21:29:42,690 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 21:29:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 21:29:42,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 21:29:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 21:29:42,691 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 21:29:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 21:29:42,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 21:29:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 21:29:42,691 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 21:29:42,692 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 21:29:42,692 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 21:29:42,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 21:29:42,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 21:29:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 21:29:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 21:29:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 21:29:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 21:29:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 21:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 21:29:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 21:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 21:29:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 21:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 21:29:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 21:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 21:29:42,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 21:29:42,695 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 21:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 21:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 21:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 21:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 21:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 21:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 21:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 21:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 21:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 21:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 21:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 21:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 21:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-22 21:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-22 21:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-22 21:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-22 21:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 21:29:42,698 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 21:29:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 21:29:42,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 21:29:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 21:29:42,699 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 21:29:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 21:29:42,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 21:29:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-22 21:29:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-22 21:29:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 21:29:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 21:29:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:29:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:29:42,700 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 21:29:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 21:29:42,881 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:29:42,886 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:29:43,669 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:29:43,728 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:29:43,728 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 21:29:43,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:29:43 BoogieIcfgContainer [2023-11-22 21:29:43,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:29:43,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:29:43,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:29:43,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:29:43,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:29:41" (1/3) ... [2023-11-22 21:29:43,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f58a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:29:43, skipping insertion in model container [2023-11-22 21:29:43,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (2/3) ... [2023-11-22 21:29:43,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f58a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:29:43, skipping insertion in model container [2023-11-22 21:29:43,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:29:43" (3/3) ... [2023-11-22 21:29:43,737 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2023-11-22 21:29:43,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:29:43,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:29:43,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:29:43,796 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47ab7ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:29:43,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:29:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-22 21:29:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 21:29:43,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:43,829 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:43,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:43,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 45902878, now seen corresponding path program 1 times [2023-11-22 21:29:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:43,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562651031] [2023-11-22 21:29:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:43,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:29:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:29:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 21:29:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:29:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:29:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 21:29:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 21:29:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:44,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562651031] [2023-11-22 21:29:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562651031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424052137] [2023-11-22 21:29:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:44,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:44,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:44,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:44,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 21:29:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 21:29:45,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:45,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:45,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424052137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:45,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:45,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-11-22 21:29:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519501729] [2023-11-22 21:29:45,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:45,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 21:29:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:45,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 21:29:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:29:45,331 INFO L87 Difference]: Start difference. First operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:45,414 INFO L93 Difference]: Finished difference Result 1138 states and 1939 transitions. [2023-11-22 21:29:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 21:29:45,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-11-22 21:29:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:45,438 INFO L225 Difference]: With dead ends: 1138 [2023-11-22 21:29:45,439 INFO L226 Difference]: Without dead ends: 571 [2023-11-22 21:29:45,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:29:45,448 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:45,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-11-22 21:29:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2023-11-22 21:29:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.7004504504504505) internal successors, (755), 462 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 21:29:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 956 transitions. [2023-11-22 21:29:45,518 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 956 transitions. Word has length 84 [2023-11-22 21:29:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:45,519 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 956 transitions. [2023-11-22 21:29:45,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 956 transitions. [2023-11-22 21:29:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 21:29:45,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:45,525 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:45,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 21:29:45,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 21:29:45,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:45,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:45,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1452086658, now seen corresponding path program 1 times [2023-11-22 21:29:45,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:45,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134980992] [2023-11-22 21:29:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:45,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:29:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:29:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 21:29:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:29:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:29:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 21:29:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 21:29:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:46,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134980992] [2023-11-22 21:29:46,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134980992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:46,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485363192] [2023-11-22 21:29:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:46,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:46,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:46,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:46,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 21:29:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:46,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:29:46,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485363192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:46,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 21:29:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567165313] [2023-11-22 21:29:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:46,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:29:46,597 INFO L87 Difference]: Start difference. First operand 571 states and 956 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:46,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:46,713 INFO L93 Difference]: Finished difference Result 1148 states and 1925 transitions. [2023-11-22 21:29:46,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:46,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-11-22 21:29:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:46,721 INFO L225 Difference]: With dead ends: 1148 [2023-11-22 21:29:46,721 INFO L226 Difference]: Without dead ends: 580 [2023-11-22 21:29:46,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:46,725 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 26 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:46,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2769 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-22 21:29:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2023-11-22 21:29:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.7013274336283186) internal successors, (769), 470 states have internal predecessors, (769), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 21:29:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 970 transitions. [2023-11-22 21:29:46,775 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 970 transitions. Word has length 84 [2023-11-22 21:29:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:46,775 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 970 transitions. [2023-11-22 21:29:46,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 970 transitions. [2023-11-22 21:29:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 21:29:46,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:46,779 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:46,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 21:29:46,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:46,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1293983062, now seen corresponding path program 1 times [2023-11-22 21:29:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044569405] [2023-11-22 21:29:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 21:29:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:29:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:29:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 21:29:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 21:29:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 21:29:47,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044569405] [2023-11-22 21:29:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044569405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323292862] [2023-11-22 21:29:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:47,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:47,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:47,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:47,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 21:29:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:47,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:47,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323292862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:47,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 21:29:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036281554] [2023-11-22 21:29:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:47,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:47,846 INFO L87 Difference]: Start difference. First operand 580 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:48,016 INFO L93 Difference]: Finished difference Result 1199 states and 2019 transitions. [2023-11-22 21:29:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:48,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-22 21:29:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:48,019 INFO L225 Difference]: With dead ends: 1199 [2023-11-22 21:29:48,020 INFO L226 Difference]: Without dead ends: 624 [2023-11-22 21:29:48,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:48,022 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 168 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:48,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2615 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:48,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-11-22 21:29:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2023-11-22 21:29:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 495 states have (on average 1.7212121212121212) internal successors, (852), 513 states have internal predecessors, (852), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 21:29:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1053 transitions. [2023-11-22 21:29:48,038 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1053 transitions. Word has length 86 [2023-11-22 21:29:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:48,038 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1053 transitions. [2023-11-22 21:29:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1053 transitions. [2023-11-22 21:29:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-22 21:29:48,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:48,040 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:48,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:48,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:48,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash 210519474, now seen corresponding path program 1 times [2023-11-22 21:29:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309974910] [2023-11-22 21:29:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 21:29:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 21:29:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:29:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 21:29:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:29:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:29:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 21:29:48,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:48,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309974910] [2023-11-22 21:29:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309974910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:48,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370749140] [2023-11-22 21:29:48,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:48,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:48,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:48,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 21:29:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:48,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:49,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370749140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:49,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 21:29:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620540169] [2023-11-22 21:29:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:49,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:29:49,022 INFO L87 Difference]: Start difference. First operand 624 states and 1053 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:49,136 INFO L93 Difference]: Finished difference Result 1266 states and 2136 transitions. [2023-11-22 21:29:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-11-22 21:29:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:49,140 INFO L225 Difference]: With dead ends: 1266 [2023-11-22 21:29:49,140 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 21:29:49,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:49,143 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 113 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5463 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:49,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5463 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 21:29:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 636. [2023-11-22 21:29:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-11-22 21:29:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2023-11-22 21:29:49,159 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 88 [2023-11-22 21:29:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:49,159 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2023-11-22 21:29:49,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2023-11-22 21:29:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 21:29:49,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:49,161 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:49,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:49,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:49,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:49,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:49,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1885228893, now seen corresponding path program 1 times [2023-11-22 21:29:49,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:49,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929882268] [2023-11-22 21:29:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:49,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:29:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:29:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:29:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:29:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:29:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 21:29:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929882268] [2023-11-22 21:29:49,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929882268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109422239] [2023-11-22 21:29:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:49,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:49,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:49,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 21:29:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:50,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:50,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109422239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 21:29:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965077747] [2023-11-22 21:29:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:50,144 INFO L87 Difference]: Start difference. First operand 636 states and 1073 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:50,261 INFO L93 Difference]: Finished difference Result 1284 states and 2165 transitions. [2023-11-22 21:29:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:50,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-11-22 21:29:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:50,265 INFO L225 Difference]: With dead ends: 1284 [2023-11-22 21:29:50,265 INFO L226 Difference]: Without dead ends: 655 [2023-11-22 21:29:50,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:50,268 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 124 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:50,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5451 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-22 21:29:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 636. [2023-11-22 21:29:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-11-22 21:29:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2023-11-22 21:29:50,284 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 89 [2023-11-22 21:29:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:50,284 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2023-11-22 21:29:50,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2023-11-22 21:29:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 21:29:50,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:50,286 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:50,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:50,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:50,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:50,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash -300952191, now seen corresponding path program 1 times [2023-11-22 21:29:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:50,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530318110] [2023-11-22 21:29:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:29:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:29:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:29:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:29:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:29:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:29:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 21:29:50,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:50,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530318110] [2023-11-22 21:29:50,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530318110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:50,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213982534] [2023-11-22 21:29:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:50,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:50,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:50,889 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:50,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 21:29:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:51,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-22 21:29:51,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213982534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:51,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:51,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 21:29:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727714278] [2023-11-22 21:29:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:51,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:51,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:29:51,156 INFO L87 Difference]: Start difference. First operand 636 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:51,221 INFO L93 Difference]: Finished difference Result 1280 states and 2157 transitions. [2023-11-22 21:29:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2023-11-22 21:29:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:51,224 INFO L225 Difference]: With dead ends: 1280 [2023-11-22 21:29:51,224 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 21:29:51,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:51,227 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 20 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:51,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2770 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 21:29:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2023-11-22 21:29:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 21:29:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 21:29:51,241 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 89 [2023-11-22 21:29:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:51,242 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 21:29:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 21:29:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 21:29:51,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:51,244 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:29:51,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:51,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:51,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:51,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1535905988, now seen corresponding path program 1 times [2023-11-22 21:29:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752667284] [2023-11-22 21:29:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:29:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:29:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:29:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 21:29:51,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:51,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752667284] [2023-11-22 21:29:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752667284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:51,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493644550] [2023-11-22 21:29:51,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:51,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:51,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:51,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:51,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 21:29:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:51,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 21:29:51,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493644550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:51,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:51,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-22 21:29:51,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698077911] [2023-11-22 21:29:51,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:51,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:51,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:51,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:51,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:51,986 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:52,106 INFO L93 Difference]: Finished difference Result 1293 states and 2168 transitions. [2023-11-22 21:29:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:52,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-22 21:29:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:52,110 INFO L225 Difference]: With dead ends: 1293 [2023-11-22 21:29:52,110 INFO L226 Difference]: Without dead ends: 666 [2023-11-22 21:29:52,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:52,113 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 135 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5439 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:52,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5439 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-22 21:29:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2023-11-22 21:29:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 21:29:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 21:29:52,129 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2023-11-22 21:29:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:52,129 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 21:29:52,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 21:29:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 21:29:52,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:52,131 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:29:52,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:52,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:52,343 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:52,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1950057538, now seen corresponding path program 1 times [2023-11-22 21:29:52,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:52,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581192697] [2023-11-22 21:29:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:52,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:29:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:29:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:29:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 21:29:52,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:52,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581192697] [2023-11-22 21:29:52,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581192697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:52,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777014097] [2023-11-22 21:29:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:52,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:52,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:52,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:52,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 21:29:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:52,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 21:29:52,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777014097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:52,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:52,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 21:29:52,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115846011] [2023-11-22 21:29:52,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:52,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:52,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:52,844 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:53,009 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2023-11-22 21:29:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-22 21:29:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:53,012 INFO L225 Difference]: With dead ends: 1295 [2023-11-22 21:29:53,013 INFO L226 Difference]: Without dead ends: 668 [2023-11-22 21:29:53,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:53,015 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 131 mSDsluCounter, 5409 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:53,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6326 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-22 21:29:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2023-11-22 21:29:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 21:29:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 21:29:53,030 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2023-11-22 21:29:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:53,030 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 21:29:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 21:29:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-22 21:29:53,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:53,032 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:53,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 21:29:53,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:53,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash 378866343, now seen corresponding path program 1 times [2023-11-22 21:29:53,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:53,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684274159] [2023-11-22 21:29:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:53,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:29:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 21:29:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:29:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:29:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 21:29:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 21:29:53,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:53,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684274159] [2023-11-22 21:29:53,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684274159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:53,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48119651] [2023-11-22 21:29:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:53,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:53,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:53,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:53,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 21:29:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:53,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:54,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:54,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48119651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:54,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:54,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 21:29:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822993858] [2023-11-22 21:29:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:54,013 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:54,178 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2023-11-22 21:29:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-22 21:29:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:54,182 INFO L225 Difference]: With dead ends: 1295 [2023-11-22 21:29:54,182 INFO L226 Difference]: Without dead ends: 668 [2023-11-22 21:29:54,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:29:54,184 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 141 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:54,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6314 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-22 21:29:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2023-11-22 21:29:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 21:29:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 21:29:54,198 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 91 [2023-11-22 21:29:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:54,199 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 21:29:54,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 21:29:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-22 21:29:54,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:54,201 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:29:54,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:54,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:54,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:54,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash -653020125, now seen corresponding path program 1 times [2023-11-22 21:29:54,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:54,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099813041] [2023-11-22 21:29:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:54,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:29:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:29:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:29:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 21:29:54,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:54,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099813041] [2023-11-22 21:29:54,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099813041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163912737] [2023-11-22 21:29:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:54,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:54,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:54,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:54,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 21:29:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:54,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 21:29:54,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163912737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 21:29:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640290108] [2023-11-22 21:29:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:54,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:54,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:54,921 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:55,110 INFO L93 Difference]: Finished difference Result 1287 states and 2157 transitions. [2023-11-22 21:29:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:55,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2023-11-22 21:29:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:55,114 INFO L225 Difference]: With dead ends: 1287 [2023-11-22 21:29:55,114 INFO L226 Difference]: Without dead ends: 660 [2023-11-22 21:29:55,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:55,116 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 151 mSDsluCounter, 5385 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6302 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:55,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6302 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-22 21:29:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 645. [2023-11-22 21:29:55,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 21:29:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 21:29:55,131 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 80 [2023-11-22 21:29:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:55,132 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 21:29:55,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 21:29:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 21:29:55,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:55,134 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:55,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:55,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 21:29:55,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:55,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1177552581, now seen corresponding path program 1 times [2023-11-22 21:29:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:55,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393904198] [2023-11-22 21:29:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:29:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:29:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 21:29:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 21:29:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393904198] [2023-11-22 21:29:55,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393904198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642393283] [2023-11-22 21:29:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:55,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:55,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:55,749 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:55,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 21:29:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:56,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:56,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:56,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642393283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:56,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:56,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 21:29:56,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183442950] [2023-11-22 21:29:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:56,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:56,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:56,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:56,048 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:56,113 INFO L93 Difference]: Finished difference Result 1261 states and 2119 transitions. [2023-11-22 21:29:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2023-11-22 21:29:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:56,117 INFO L225 Difference]: With dead ends: 1261 [2023-11-22 21:29:56,117 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 21:29:56,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:29:56,120 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 35 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:56,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2768 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 21:29:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2023-11-22 21:29:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.69921875) internal successors, (870), 532 states have internal predecessors, (870), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 21:29:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1076 transitions. [2023-11-22 21:29:56,134 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1076 transitions. Word has length 92 [2023-11-22 21:29:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:56,134 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1076 transitions. [2023-11-22 21:29:56,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1076 transitions. [2023-11-22 21:29:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-22 21:29:56,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:56,137 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:29:56,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 21:29:56,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:56,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1965468872, now seen corresponding path program 1 times [2023-11-22 21:29:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:56,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257769544] [2023-11-22 21:29:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 21:29:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 21:29:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 21:29:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 21:29:56,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:56,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257769544] [2023-11-22 21:29:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257769544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170181352] [2023-11-22 21:29:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:56,573 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:56,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 21:29:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:56,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:56,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170181352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:56,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:56,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-22 21:29:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182983947] [2023-11-22 21:29:56,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:56,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:56,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:56,820 INFO L87 Difference]: Start difference. First operand 645 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:56,970 INFO L93 Difference]: Finished difference Result 1257 states and 2110 transitions. [2023-11-22 21:29:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:56,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-11-22 21:29:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:56,973 INFO L225 Difference]: With dead ends: 1257 [2023-11-22 21:29:56,973 INFO L226 Difference]: Without dead ends: 697 [2023-11-22 21:29:56,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:56,975 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 239 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:56,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2604 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-11-22 21:29:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2023-11-22 21:29:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 555 states have (on average 1.7171171171171171) internal successors, (953), 575 states have internal predecessors, (953), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2023-11-22 21:29:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1158 transitions. [2023-11-22 21:29:56,988 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1158 transitions. Word has length 81 [2023-11-22 21:29:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:56,988 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1158 transitions. [2023-11-22 21:29:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1158 transitions. [2023-11-22 21:29:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 21:29:56,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:56,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:29:57,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 21:29:57,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:57,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1005732585, now seen corresponding path program 1 times [2023-11-22 21:29:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593983741] [2023-11-22 21:29:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:29:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:29:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:29:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 21:29:57,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:57,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593983741] [2023-11-22 21:29:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593983741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:57,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047987691] [2023-11-22 21:29:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:57,448 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:57,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 21:29:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:57,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 21:29:57,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047987691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:57,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:57,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-22 21:29:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126593772] [2023-11-22 21:29:57,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:57,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:57,724 INFO L87 Difference]: Start difference. First operand 689 states and 1158 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:57,845 INFO L93 Difference]: Finished difference Result 1281 states and 2144 transitions. [2023-11-22 21:29:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2023-11-22 21:29:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:57,849 INFO L225 Difference]: With dead ends: 1281 [2023-11-22 21:29:57,849 INFO L226 Difference]: Without dead ends: 721 [2023-11-22 21:29:57,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:29:57,851 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 113 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:57,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5464 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-22 21:29:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 701. [2023-11-22 21:29:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 21:29:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-11-22 21:29:57,865 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 82 [2023-11-22 21:29:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:57,866 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-11-22 21:29:57,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:57,866 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-11-22 21:29:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 21:29:57,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:57,868 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:57,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 21:29:58,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:58,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash 712217724, now seen corresponding path program 1 times [2023-11-22 21:29:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237467624] [2023-11-22 21:29:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 21:29:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 21:29:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:29:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237467624] [2023-11-22 21:29:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237467624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32508151] [2023-11-22 21:29:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:58,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:58,540 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:58,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 21:29:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:58,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 21:29:58,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:58,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32508151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:58,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:58,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 21:29:58,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418280609] [2023-11-22 21:29:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:29:58,847 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:58,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:58,983 INFO L93 Difference]: Finished difference Result 1289 states and 2157 transitions. [2023-11-22 21:29:58,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:58,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-11-22 21:29:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:58,986 INFO L225 Difference]: With dead ends: 1289 [2023-11-22 21:29:58,986 INFO L226 Difference]: Without dead ends: 729 [2023-11-22 21:29:58,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:58,988 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 124 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5452 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-22 21:29:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 701. [2023-11-22 21:29:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 21:29:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-11-22 21:29:59,003 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2023-11-22 21:29:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:59,003 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-11-22 21:29:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-11-22 21:29:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 21:29:59,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:59,005 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:59,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:59,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:59,218 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:59,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash 440502268, now seen corresponding path program 1 times [2023-11-22 21:29:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650840806] [2023-11-22 21:29:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 21:29:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 21:29:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:29:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:59,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:59,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650840806] [2023-11-22 21:29:59,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650840806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:59,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612949458] [2023-11-22 21:29:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:59,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:59,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:59,657 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:29:59,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 21:29:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:59,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 21:29:59,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612949458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:59,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 21:29:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825874511] [2023-11-22 21:29:59,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:59,976 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:00,154 INFO L93 Difference]: Finished difference Result 1291 states and 2159 transitions. [2023-11-22 21:30:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-11-22 21:30:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:00,157 INFO L225 Difference]: With dead ends: 1291 [2023-11-22 21:30:00,157 INFO L226 Difference]: Without dead ends: 731 [2023-11-22 21:30:00,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-22 21:30:00,160 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 132 mSDsluCounter, 5410 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:00,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6327 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-11-22 21:30:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 701. [2023-11-22 21:30:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 21:30:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-11-22 21:30:00,188 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2023-11-22 21:30:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:00,189 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-11-22 21:30:00,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-11-22 21:30:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-22 21:30:00,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:00,191 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:30:00,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:00,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 21:30:00,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:00,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash 462298868, now seen corresponding path program 1 times [2023-11-22 21:30:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:00,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521780783] [2023-11-22 21:30:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:00,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:30:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:30:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 21:30:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:30:00,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521780783] [2023-11-22 21:30:00,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521780783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979733173] [2023-11-22 21:30:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:00,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:00,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:00,576 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:00,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 21:30:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:30:00,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 21:30:00,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979733173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:00,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:00,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 21:30:00,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054260435] [2023-11-22 21:30:00,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:00,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:30:00,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:30:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:30:00,804 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:30:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:00,862 INFO L93 Difference]: Finished difference Result 1333 states and 2238 transitions. [2023-11-22 21:30:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:30:00,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-11-22 21:30:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:00,865 INFO L225 Difference]: With dead ends: 1333 [2023-11-22 21:30:00,865 INFO L226 Difference]: Without dead ends: 701 [2023-11-22 21:30:00,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:30:00,867 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 10 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:00,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2770 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-11-22 21:30:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2023-11-22 21:30:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 21:30:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2023-11-22 21:30:00,881 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 83 [2023-11-22 21:30:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:00,881 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2023-11-22 21:30:00,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:30:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2023-11-22 21:30:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-22 21:30:00,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:00,883 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:30:00,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:01,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 21:30:01,096 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:01,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1042106081, now seen corresponding path program 1 times [2023-11-22 21:30:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784949621] [2023-11-22 21:30:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:30:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:30:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:30:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 21:30:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:30:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:30:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:01,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784949621] [2023-11-22 21:30:01,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784949621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:01,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44562767] [2023-11-22 21:30:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:01,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:01,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:01,588 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:01,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 21:30:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:30:01,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 21:30:01,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:01,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44562767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:01,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:01,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 21:30:01,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193273070] [2023-11-22 21:30:01,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:01,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:30:01,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:30:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:01,909 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:02,084 INFO L93 Difference]: Finished difference Result 1283 states and 2143 transitions. [2023-11-22 21:30:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:02,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2023-11-22 21:30:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:02,087 INFO L225 Difference]: With dead ends: 1283 [2023-11-22 21:30:02,087 INFO L226 Difference]: Without dead ends: 723 [2023-11-22 21:30:02,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-22 21:30:02,089 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 142 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:02,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6297 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-22 21:30:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 701. [2023-11-22 21:30:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 21:30:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2023-11-22 21:30:02,103 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 96 [2023-11-22 21:30:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:02,104 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2023-11-22 21:30:02,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2023-11-22 21:30:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-22 21:30:02,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:02,106 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:30:02,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:02,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 21:30:02,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:02,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash 407035319, now seen corresponding path program 1 times [2023-11-22 21:30:02,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:02,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695274089] [2023-11-22 21:30:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:02,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 21:30:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:30:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 21:30:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:30:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695274089] [2023-11-22 21:30:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695274089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040853133] [2023-11-22 21:30:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:02,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:02,730 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:02,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 21:30:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:02,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:30:03,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:03,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040853133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:03,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:03,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-11-22 21:30:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522675790] [2023-11-22 21:30:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:30:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:03,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:30:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:03,170 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-22 21:30:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:05,877 INFO L93 Difference]: Finished difference Result 2438 states and 4115 transitions. [2023-11-22 21:30:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:30:05,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2023-11-22 21:30:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:05,886 INFO L225 Difference]: With dead ends: 2438 [2023-11-22 21:30:05,886 INFO L226 Difference]: Without dead ends: 1882 [2023-11-22 21:30:05,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:30:05,890 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3087 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:05,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 1253 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-22 21:30:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2023-11-22 21:30:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1715. [2023-11-22 21:30:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1376 states have (on average 1.7005813953488371) internal successors, (2340), 1414 states have internal predecessors, (2340), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2023-11-22 21:30:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2899 transitions. [2023-11-22 21:30:05,966 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2899 transitions. Word has length 97 [2023-11-22 21:30:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:05,967 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2899 transitions. [2023-11-22 21:30:05,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-22 21:30:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2899 transitions. [2023-11-22 21:30:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-22 21:30:05,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:05,971 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-22 21:30:05,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 21:30:06,183 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:06,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1665695133, now seen corresponding path program 1 times [2023-11-22 21:30:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96392626] [2023-11-22 21:30:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 21:30:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 21:30:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 21:30:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-22 21:30:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 21:30:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 21:30:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 21:30:07,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96392626] [2023-11-22 21:30:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96392626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665562410] [2023-11-22 21:30:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:07,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:07,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:07,187 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:07,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 21:30:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:30:07,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:30:07,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:07,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665562410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:07,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:07,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 22 [2023-11-22 21:30:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264103447] [2023-11-22 21:30:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:07,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:30:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:30:07,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-11-22 21:30:07,523 INFO L87 Difference]: Start difference. First operand 1715 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-22 21:30:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:07,619 INFO L93 Difference]: Finished difference Result 4838 states and 8274 transitions. [2023-11-22 21:30:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:30:07,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2023-11-22 21:30:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:07,635 INFO L225 Difference]: With dead ends: 4838 [2023-11-22 21:30:07,635 INFO L226 Difference]: Without dead ends: 3269 [2023-11-22 21:30:07,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-11-22 21:30:07,642 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 952 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:07,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1848 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2023-11-22 21:30:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3250. [2023-11-22 21:30:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2605 states have (on average 1.6998080614203455) internal successors, (4428), 2672 states have internal predecessors, (4428), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2023-11-22 21:30:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 5534 transitions. [2023-11-22 21:30:07,751 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 5534 transitions. Word has length 169 [2023-11-22 21:30:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:07,751 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 5534 transitions. [2023-11-22 21:30:07,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-22 21:30:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 5534 transitions. [2023-11-22 21:30:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-22 21:30:07,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:07,756 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-22 21:30:07,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:07,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:07,970 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:07,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1766322943, now seen corresponding path program 1 times [2023-11-22 21:30:07,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:07,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437907053] [2023-11-22 21:30:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:07,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:30:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 21:30:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 21:30:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-22 21:30:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 21:30:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 21:30:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-22 21:30:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437907053] [2023-11-22 21:30:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437907053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484815701] [2023-11-22 21:30:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:08,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:08,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 21:30:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:09,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 2180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:30:09,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:09,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:30:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-22 21:30:09,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484815701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:30:09,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:30:09,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2023-11-22 21:30:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788537864] [2023-11-22 21:30:09,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:30:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 21:30:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 21:30:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:09,351 INFO L87 Difference]: Start difference. First operand 3250 states and 5534 transitions. Second operand has 17 states, 16 states have (on average 10.0) internal successors, (160), 12 states have internal predecessors, (160), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2023-11-22 21:30:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:22,868 INFO L93 Difference]: Finished difference Result 11896 states and 20767 transitions. [2023-11-22 21:30:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-22 21:30:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 10.0) internal successors, (160), 12 states have internal predecessors, (160), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) Word has length 170 [2023-11-22 21:30:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:22,902 INFO L225 Difference]: With dead ends: 11896 [2023-11-22 21:30:22,902 INFO L226 Difference]: Without dead ends: 8605 [2023-11-22 21:30:22,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 395 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2023-11-22 21:30:22,914 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 3232 mSDsluCounter, 4933 mSDsCounter, 0 mSdLazyCounter, 12370 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 13219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 12370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:22,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 5433 Invalid, 13219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [849 Valid, 12370 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-22 21:30:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8605 states. [2023-11-22 21:30:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8605 to 5604. [2023-11-22 21:30:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 4449 states have (on average 1.662845583277141) internal successors, (7398), 4535 states have internal predecessors, (7398), 915 states have call successors, (915), 208 states have call predecessors, (915), 239 states have return successors, (1189), 882 states have call predecessors, (1189), 905 states have call successors, (1189) [2023-11-22 21:30:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 9502 transitions. [2023-11-22 21:30:23,714 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 9502 transitions. Word has length 170 [2023-11-22 21:30:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:23,715 INFO L495 AbstractCegarLoop]: Abstraction has 5604 states and 9502 transitions. [2023-11-22 21:30:23,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 10.0) internal successors, (160), 12 states have internal predecessors, (160), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2023-11-22 21:30:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 9502 transitions. [2023-11-22 21:30:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 21:30:23,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:23,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:23,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:23,933 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:23,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1029118167, now seen corresponding path program 1 times [2023-11-22 21:30:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:23,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045895308] [2023-11-22 21:30:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:30:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 21:30:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 21:30:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 21:30:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 21:30:24,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:24,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045895308] [2023-11-22 21:30:24,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045895308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:24,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407360595] [2023-11-22 21:30:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:24,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:24,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:24,361 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:24,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 21:30:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:24,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 21:30:24,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 21:30:24,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:24,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407360595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:24,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:24,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-11-22 21:30:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951432709] [2023-11-22 21:30:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:24,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:24,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:24,642 INFO L87 Difference]: Start difference. First operand 5604 states and 9502 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:30:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:25,403 INFO L93 Difference]: Finished difference Result 11262 states and 19081 transitions. [2023-11-22 21:30:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:30:25,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-11-22 21:30:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:25,424 INFO L225 Difference]: With dead ends: 11262 [2023-11-22 21:30:25,424 INFO L226 Difference]: Without dead ends: 5671 [2023-11-22 21:30:25,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:30:25,440 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 134 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5445 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:25,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5445 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2023-11-22 21:30:26,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5597. [2023-11-22 21:30:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 4442 states have (on average 1.6618640252138677) internal successors, (7382), 4528 states have internal predecessors, (7382), 915 states have call successors, (915), 208 states have call predecessors, (915), 239 states have return successors, (1189), 882 states have call predecessors, (1189), 905 states have call successors, (1189) [2023-11-22 21:30:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 9486 transitions. [2023-11-22 21:30:26,116 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 9486 transitions. Word has length 123 [2023-11-22 21:30:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:26,116 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 9486 transitions. [2023-11-22 21:30:26,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:30:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 9486 transitions. [2023-11-22 21:30:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-22 21:30:26,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:26,122 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-22 21:30:26,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:26,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:26,333 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:26,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 499444547, now seen corresponding path program 1 times [2023-11-22 21:30:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579213113] [2023-11-22 21:30:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:30:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 21:30:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 21:30:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 21:30:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-22 21:30:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 21:30:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-22 21:30:27,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579213113] [2023-11-22 21:30:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579213113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:27,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:30:27,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 21:30:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803103073] [2023-11-22 21:30:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:30:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:27,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:30:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:30:27,019 INFO L87 Difference]: Start difference. First operand 5597 states and 9486 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:32,572 INFO L93 Difference]: Finished difference Result 12780 states and 21926 transitions. [2023-11-22 21:30:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 21:30:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2023-11-22 21:30:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:32,597 INFO L225 Difference]: With dead ends: 12780 [2023-11-22 21:30:32,598 INFO L226 Difference]: Without dead ends: 7188 [2023-11-22 21:30:32,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:32,614 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1547 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:32,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 1504 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-22 21:30:32,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2023-11-22 21:30:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5570. [2023-11-22 21:30:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 4418 states have (on average 1.6607062019013128) internal successors, (7337), 4502 states have internal predecessors, (7337), 914 states have call successors, (914), 208 states have call predecessors, (914), 237 states have return successors, (1186), 881 states have call predecessors, (1186), 904 states have call successors, (1186) [2023-11-22 21:30:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 9437 transitions. [2023-11-22 21:30:33,273 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 9437 transitions. Word has length 172 [2023-11-22 21:30:33,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:33,273 INFO L495 AbstractCegarLoop]: Abstraction has 5570 states and 9437 transitions. [2023-11-22 21:30:33,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 9437 transitions. [2023-11-22 21:30:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-22 21:30:33,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:33,278 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-22 21:30:33,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 21:30:33,278 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:33,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash 836969304, now seen corresponding path program 1 times [2023-11-22 21:30:33,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655434991] [2023-11-22 21:30:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:30:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:30:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 21:30:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 21:30:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:30:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:30:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-22 21:30:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-22 21:30:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 21:30:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-22 21:30:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655434991] [2023-11-22 21:30:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655434991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792212330] [2023-11-22 21:30:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:34,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:34,098 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:34,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 21:30:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:34,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 21:30:34,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 21:30:34,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:30:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 21:30:34,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792212330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:30:34,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:30:34,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2023-11-22 21:30:34,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332793702] [2023-11-22 21:30:34,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:30:34,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 21:30:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:34,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 21:30:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:34,843 INFO L87 Difference]: Start difference. First operand 5570 states and 9437 transitions. Second operand has 17 states, 17 states have (on average 11.764705882352942) internal successors, (200), 11 states have internal predecessors, (200), 6 states have call successors, (54), 9 states have call predecessors, (54), 7 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2023-11-22 21:30:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:47,864 INFO L93 Difference]: Finished difference Result 13506 states and 23595 transitions. [2023-11-22 21:30:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-22 21:30:47,865 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.764705882352942) internal successors, (200), 11 states have internal predecessors, (200), 6 states have call successors, (54), 9 states have call predecessors, (54), 7 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) Word has length 173 [2023-11-22 21:30:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:47,895 INFO L225 Difference]: With dead ends: 13506 [2023-11-22 21:30:47,895 INFO L226 Difference]: Without dead ends: 8017 [2023-11-22 21:30:47,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 391 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2023-11-22 21:30:47,917 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 3208 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 11748 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 12953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 11748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:47,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 4108 Invalid, 12953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1205 Valid, 11748 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-22 21:30:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8017 states. [2023-11-22 21:30:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8017 to 5121. [2023-11-22 21:30:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 3989 states have (on average 1.6395086487841564) internal successors, (6540), 4086 states have internal predecessors, (6540), 918 states have call successors, (918), 177 states have call predecessors, (918), 213 states have return successors, (1127), 901 states have call predecessors, (1127), 908 states have call successors, (1127) [2023-11-22 21:30:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 8585 transitions. [2023-11-22 21:30:48,651 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 8585 transitions. Word has length 173 [2023-11-22 21:30:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:48,651 INFO L495 AbstractCegarLoop]: Abstraction has 5121 states and 8585 transitions. [2023-11-22 21:30:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.764705882352942) internal successors, (200), 11 states have internal predecessors, (200), 6 states have call successors, (54), 9 states have call predecessors, (54), 7 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2023-11-22 21:30:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 8585 transitions. [2023-11-22 21:30:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-22 21:30:48,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:48,655 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:30:48,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:48,868 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:48,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1986681780, now seen corresponding path program 1 times [2023-11-22 21:30:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458886027] [2023-11-22 21:30:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:30:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:30:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 21:30:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 21:30:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 21:30:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 21:30:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 21:30:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:30:49,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:49,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458886027] [2023-11-22 21:30:49,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458886027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:49,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:30:49,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 21:30:49,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746607461] [2023-11-22 21:30:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:49,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 21:30:49,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 21:30:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:49,354 INFO L87 Difference]: Start difference. First operand 5121 states and 8585 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:31:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:31:01,562 INFO L93 Difference]: Finished difference Result 16342 states and 29373 transitions. [2023-11-22 21:31:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 21:31:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 126 [2023-11-22 21:31:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:31:01,618 INFO L225 Difference]: With dead ends: 16342 [2023-11-22 21:31:01,619 INFO L226 Difference]: Without dead ends: 11302 [2023-11-22 21:31:01,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-11-22 21:31:01,642 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2720 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 7387 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 8155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 7387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:31:01,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2808 Valid, 3317 Invalid, 8155 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [768 Valid, 7387 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-22 21:31:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11302 states. [2023-11-22 21:31:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11302 to 8316. [2023-11-22 21:31:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8316 states, 6460 states have (on average 1.6270897832817337) internal successors, (10511), 6615 states have internal predecessors, (10511), 1502 states have call successors, (1502), 287 states have call predecessors, (1502), 353 states have return successors, (2194), 1501 states have call predecessors, (2194), 1488 states have call successors, (2194) [2023-11-22 21:31:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8316 states to 8316 states and 14207 transitions. [2023-11-22 21:31:02,965 INFO L78 Accepts]: Start accepts. Automaton has 8316 states and 14207 transitions. Word has length 126 [2023-11-22 21:31:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:31:02,965 INFO L495 AbstractCegarLoop]: Abstraction has 8316 states and 14207 transitions. [2023-11-22 21:31:02,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:31:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8316 states and 14207 transitions. [2023-11-22 21:31:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-22 21:31:02,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:31:02,968 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:31:02,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 21:31:02,968 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:31:02,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:31:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash -495835103, now seen corresponding path program 1 times [2023-11-22 21:31:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:31:02,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917575925] [2023-11-22 21:31:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:31:02,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:31:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:31:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:31:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:31:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:31:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:31:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:31:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:31:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 21:31:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:31:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 21:31:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 21:31:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:31:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:31:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:31:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917575925] [2023-11-22 21:31:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917575925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:31:03,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:31:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 21:31:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471037930] [2023-11-22 21:31:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:31:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:31:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:31:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:31:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:31:03,456 INFO L87 Difference]: Start difference. First operand 8316 states and 14207 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:31:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:31:14,593 INFO L93 Difference]: Finished difference Result 28005 states and 53602 transitions. [2023-11-22 21:31:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 21:31:14,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2023-11-22 21:31:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:31:14,685 INFO L225 Difference]: With dead ends: 28005 [2023-11-22 21:31:14,685 INFO L226 Difference]: Without dead ends: 19770 [2023-11-22 21:31:14,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:31:14,733 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 2710 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 4410 mSolverCounterSat, 766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 5176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 4410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:31:14,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2801 Valid, 2226 Invalid, 5176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 4410 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-22 21:31:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19770 states. [2023-11-22 21:31:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19770 to 14740. [2023-11-22 21:31:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14740 states, 11436 states have (on average 1.6179608254634488) internal successors, (18503), 11719 states have internal predecessors, (18503), 2670 states have call successors, (2670), 507 states have call predecessors, (2670), 633 states have return successors, (4906), 2689 states have call predecessors, (4906), 2648 states have call successors, (4906) [2023-11-22 21:31:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14740 states to 14740 states and 26079 transitions. [2023-11-22 21:31:17,276 INFO L78 Accepts]: Start accepts. Automaton has 14740 states and 26079 transitions. Word has length 127 [2023-11-22 21:31:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:31:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 14740 states and 26079 transitions. [2023-11-22 21:31:17,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:31:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 14740 states and 26079 transitions. [2023-11-22 21:31:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 21:31:17,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:31:17,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:31:17,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 21:31:17,281 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:31:17,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:31:17,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1454563832, now seen corresponding path program 1 times [2023-11-22 21:31:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:31:17,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297821792] [2023-11-22 21:31:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:31:17,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:31:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:31:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:31:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:31:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:31:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:31:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:31:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:31:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 21:31:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 21:31:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 21:31:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 21:31:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:31:17,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:31:17,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297821792] [2023-11-22 21:31:17,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297821792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:31:17,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:31:17,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 21:31:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733161032] [2023-11-22 21:31:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:31:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 21:31:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:31:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 21:31:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:31:17,804 INFO L87 Difference]: Start difference. First operand 14740 states and 26079 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:31:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:31:32,196 INFO L93 Difference]: Finished difference Result 34517 states and 63399 transitions. [2023-11-22 21:31:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 21:31:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2023-11-22 21:31:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:31:32,285 INFO L225 Difference]: With dead ends: 34517 [2023-11-22 21:31:32,285 INFO L226 Difference]: Without dead ends: 19869 [2023-11-22 21:31:32,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-11-22 21:31:32,343 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 3735 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 7345 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3834 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 8391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 7345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:31:32,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3834 Valid, 3574 Invalid, 8391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1046 Valid, 7345 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-22 21:31:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19869 states. [2023-11-22 21:31:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19869 to 14746. [2023-11-22 21:31:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14746 states, 11442 states have (on average 1.617636776787275) internal successors, (18509), 11719 states have internal predecessors, (18509), 2670 states have call successors, (2670), 507 states have call predecessors, (2670), 633 states have return successors, (4906), 2695 states have call predecessors, (4906), 2648 states have call successors, (4906) [2023-11-22 21:31:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14746 states to 14746 states and 26085 transitions. [2023-11-22 21:31:34,807 INFO L78 Accepts]: Start accepts. Automaton has 14746 states and 26085 transitions. Word has length 130 [2023-11-22 21:31:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:31:34,807 INFO L495 AbstractCegarLoop]: Abstraction has 14746 states and 26085 transitions. [2023-11-22 21:31:34,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 21:31:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 14746 states and 26085 transitions. [2023-11-22 21:31:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-22 21:31:34,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:31:34,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:31:34,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 21:31:34,811 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:31:34,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:31:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -689060646, now seen corresponding path program 1 times [2023-11-22 21:31:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:31:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213402311] [2023-11-22 21:31:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:31:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:31:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:31:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:31:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:31:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:31:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:31:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:31:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:31:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 21:31:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 21:31:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 21:31:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 21:31:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 21:31:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 21:31:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:31:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:31:35,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:31:35,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213402311] [2023-11-22 21:31:35,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213402311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:31:35,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:31:35,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 21:31:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223981915] [2023-11-22 21:31:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:31:35,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 21:31:35,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:31:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 21:31:35,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:31:35,252 INFO L87 Difference]: Start difference. First operand 14746 states and 26085 transitions. Second operand has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-22 21:32:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:32:13,014 INFO L93 Difference]: Finished difference Result 98846 states and 228397 transitions. [2023-11-22 21:32:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-22 21:32:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 135 [2023-11-22 21:32:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:32:13,548 INFO L225 Difference]: With dead ends: 98846 [2023-11-22 21:32:13,548 INFO L226 Difference]: Without dead ends: 84181 [2023-11-22 21:32:13,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=618, Invalid=2034, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 21:32:13,728 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 11750 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 9538 mSolverCounterSat, 3655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11854 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 13193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3655 IncrementalHoareTripleChecker+Valid, 9538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:32:13,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11854 Valid, 3949 Invalid, 13193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3655 Valid, 9538 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-11-22 21:32:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84181 states.