./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd --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 a6bf1264929a0645d918c583a519b6be036274699656a22f3fed375c55deb5c8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:45:18,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:45:18,389 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:45:18,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:45:18,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:45:18,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:45:18,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:45:18,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:45:18,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:45:18,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:45:18,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:45:18,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:45:18,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:45:18,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:45:18,445 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:45:18,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:45:18,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:45:18,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:45:18,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:45:18,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:45:18,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:45:18,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:45:18,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:45:18,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:45:18,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:45:18,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:45:18,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:45:18,448 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd 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 -> a6bf1264929a0645d918c583a519b6be036274699656a22f3fed375c55deb5c8 [2024-11-13 14:45:18,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:45:18,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:45:18,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:45:18,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:45:18,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:45:18,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem12_label27.c Unable to find full path for "g++" [2024-11-13 14:45:20,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:45:21,518 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:45:21,522 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/sv-benchmarks/c/eca-rers2012/Problem12_label27.c [2024-11-13 14:45:21,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/data/a6cc8b958/f25d8bbedcf9414f9abb4bcbdf279d7c/FLAG44efdce15 [2024-11-13 14:45:21,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/data/a6cc8b958/f25d8bbedcf9414f9abb4bcbdf279d7c [2024-11-13 14:45:21,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:45:21,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:45:21,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:21,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:45:21,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:45:21,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:21" (1/1) ... [2024-11-13 14:45:21,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ccee33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:21, skipping insertion in model container [2024-11-13 14:45:21,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:21" (1/1) ... [2024-11-13 14:45:21,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:45:22,051 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/sv-benchmarks/c/eca-rers2012/Problem12_label27.c[4120,4133] [2024-11-13 14:45:23,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:23,131 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:45:23,155 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/sv-benchmarks/c/eca-rers2012/Problem12_label27.c[4120,4133] [2024-11-13 14:45:23,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:23,705 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:45:23,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23 WrapperNode [2024-11-13 14:45:23,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:23,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:23,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:45:23,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:45:23,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:23,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,152 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-13 14:45:24,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:24,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:45:24,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:45:24,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:45:24,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,478 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:45:24,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:45:24,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:45:24,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:45:24,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:45:24,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (1/1) ... [2024-11-13 14:45:24,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:45:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:24,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:24,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:45:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:45:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:45:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:45:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:45:24,942 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:45:24,944 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:45:31,381 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-13 14:45:31,381 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:45:31,428 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:45:31,428 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:45:31,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:31 BoogieIcfgContainer [2024-11-13 14:45:31,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:45:31,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:45:31,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:45:31,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:45:31,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:45:21" (1/3) ... [2024-11-13 14:45:31,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0dc54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:45:31, skipping insertion in model container [2024-11-13 14:45:31,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:23" (2/3) ... [2024-11-13 14:45:31,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0dc54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:45:31, skipping insertion in model container [2024-11-13 14:45:31,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:31" (3/3) ... [2024-11-13 14:45:31,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27.c [2024-11-13 14:45:31,463 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:45:31,466 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label27.c that has 1 procedures, 818 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:45:31,568 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:45:31,582 INFO L333 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, 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;@4a49cc7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:45:31,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:45:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 14:45:31,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:31,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:31,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:31,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1162490864, now seen corresponding path program 1 times [2024-11-13 14:45:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403478668] [2024-11-13 14:45:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:31,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:31,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403478668] [2024-11-13 14:45:31,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403478668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:31,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:31,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:45:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746262248] [2024-11-13 14:45:31,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:31,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:32,011 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:37,076 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-13 14:45:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:37,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 14:45:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:37,110 INFO L225 Difference]: With dead ends: 2388 [2024-11-13 14:45:37,112 INFO L226 Difference]: Without dead ends: 1506 [2024-11-13 14:45:37,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:37,124 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 866 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:37,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 14:45:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-13 14:45:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-13 14:45:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2024-11-13 14:45:37,275 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 31 [2024-11-13 14:45:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:37,276 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2024-11-13 14:45:37,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2024-11-13 14:45:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 14:45:37,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:37,282 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:45:37,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:45:37,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:37,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 444323838, now seen corresponding path program 1 times [2024-11-13 14:45:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:37,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318319178] [2024-11-13 14:45:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:37,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:37,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318319178] [2024-11-13 14:45:37,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318319178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:37,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:37,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:45:37,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864214906] [2024-11-13 14:45:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:37,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:37,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:37,697 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:41,949 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2024-11-13 14:45:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:41,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-13 14:45:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:41,959 INFO L225 Difference]: With dead ends: 3761 [2024-11-13 14:45:41,959 INFO L226 Difference]: Without dead ends: 2257 [2024-11-13 14:45:41,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:41,962 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:41,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 14:45:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-13 14:45:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-13 14:45:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2024-11-13 14:45:42,020 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 100 [2024-11-13 14:45:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:42,021 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2024-11-13 14:45:42,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2024-11-13 14:45:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 14:45:42,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:42,024 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:45:42,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:45:42,024 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:42,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash -599689789, now seen corresponding path program 1 times [2024-11-13 14:45:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:42,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271554798] [2024-11-13 14:45:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:42,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271554798] [2024-11-13 14:45:42,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271554798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:45:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932396731] [2024-11-13 14:45:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:42,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:45:42,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:42,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:45:42,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:45:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:42,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:45:42,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:42,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:45:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932396731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:42,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:45:42,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 14:45:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339394852] [2024-11-13 14:45:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:42,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:45:42,758 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:47,184 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2024-11-13 14:45:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:45:47,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-13 14:45:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:47,205 INFO L225 Difference]: With dead ends: 6765 [2024-11-13 14:45:47,208 INFO L226 Difference]: Without dead ends: 4510 [2024-11-13 14:45:47,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:45:47,216 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 739 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:47,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 618 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 14:45:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2024-11-13 14:45:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2024-11-13 14:45:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.2929696163229096) internal successors, (5830), 4509 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5830 transitions. [2024-11-13 14:45:47,317 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5830 transitions. Word has length 102 [2024-11-13 14:45:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:47,318 INFO L471 AbstractCegarLoop]: Abstraction has 4510 states and 5830 transitions. [2024-11-13 14:45:47,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5830 transitions. [2024-11-13 14:45:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 14:45:47,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:47,325 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:45:47,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:45:47,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:45:47,526 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:47,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:47,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1582958354, now seen corresponding path program 1 times [2024-11-13 14:45:47,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:47,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830662750] [2024-11-13 14:45:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:47,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:47,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:47,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830662750] [2024-11-13 14:45:47,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830662750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:47,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:47,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346179528] [2024-11-13 14:45:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:47,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:45:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:45:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:45:47,886 INFO L87 Difference]: Start difference. First operand 4510 states and 5830 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:53,768 INFO L93 Difference]: Finished difference Result 14275 states and 18284 transitions. [2024-11-13 14:45:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:45:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-13 14:45:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:53,797 INFO L225 Difference]: With dead ends: 14275 [2024-11-13 14:45:53,797 INFO L226 Difference]: Without dead ends: 9767 [2024-11-13 14:45:53,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:45:53,804 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:53,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 14:45:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-13 14:45:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-13 14:45:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.255785377841491) internal successors, (12264), 9766 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12264 transitions. [2024-11-13 14:45:54,016 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12264 transitions. Word has length 108 [2024-11-13 14:45:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:54,018 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12264 transitions. [2024-11-13 14:45:54,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12264 transitions. [2024-11-13 14:45:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-13 14:45:54,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:54,022 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:54,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:45:54,023 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:54,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 982690847, now seen corresponding path program 1 times [2024-11-13 14:45:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632133628] [2024-11-13 14:45:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632133628] [2024-11-13 14:45:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632133628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:54,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:54,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:45:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039717985] [2024-11-13 14:45:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:54,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:45:54,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:45:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:45:54,542 INFO L87 Difference]: Start difference. First operand 9767 states and 12264 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:58,507 INFO L93 Difference]: Finished difference Result 21822 states and 27290 transitions. [2024-11-13 14:45:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:45:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2024-11-13 14:45:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:58,548 INFO L225 Difference]: With dead ends: 21822 [2024-11-13 14:45:58,548 INFO L226 Difference]: Without dead ends: 12771 [2024-11-13 14:45:58,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:45:58,559 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:58,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 612 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 14:45:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2024-11-13 14:45:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2024-11-13 14:45:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2024-11-13 14:45:58,829 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 179 [2024-11-13 14:45:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:58,829 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2024-11-13 14:45:58,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2024-11-13 14:45:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-13 14:45:58,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:58,833 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:58,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:45:58,834 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:58,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1420029129, now seen corresponding path program 1 times [2024-11-13 14:45:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:58,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292476771] [2024-11-13 14:45:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:58,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 14:45:59,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:59,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292476771] [2024-11-13 14:45:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292476771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:59,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:59,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:45:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050764676] [2024-11-13 14:45:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:59,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:45:59,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:45:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:45:59,151 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:03,571 INFO L93 Difference]: Finished difference Result 31550 states and 38845 transitions. [2024-11-13 14:46:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-13 14:46:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:03,616 INFO L225 Difference]: With dead ends: 31550 [2024-11-13 14:46:03,617 INFO L226 Difference]: Without dead ends: 20283 [2024-11-13 14:46:03,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:03,625 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:03,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 14:46:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2024-11-13 14:46:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 18779. [2024-11-13 14:46:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1888380019171372) internal successors, (22324), 18778 states have internal predecessors, (22324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22324 transitions. [2024-11-13 14:46:03,956 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22324 transitions. Word has length 244 [2024-11-13 14:46:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:03,957 INFO L471 AbstractCegarLoop]: Abstraction has 18779 states and 22324 transitions. [2024-11-13 14:46:03,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22324 transitions. [2024-11-13 14:46:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-13 14:46:03,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:03,971 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:03,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:46:03,972 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:03,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash -289879084, now seen corresponding path program 1 times [2024-11-13 14:46:03,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:03,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551993342] [2024-11-13 14:46:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:03,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:46:04,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:04,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551993342] [2024-11-13 14:46:04,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551993342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:04,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:04,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27555459] [2024-11-13 14:46:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:04,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:04,454 INFO L87 Difference]: Start difference. First operand 18779 states and 22324 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:08,220 INFO L93 Difference]: Finished difference Result 43564 states and 53013 transitions. [2024-11-13 14:46:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 330 [2024-11-13 14:46:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:08,260 INFO L225 Difference]: With dead ends: 43564 [2024-11-13 14:46:08,260 INFO L226 Difference]: Without dead ends: 25538 [2024-11-13 14:46:08,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:08,275 INFO L432 NwaCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:08,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 14:46:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-13 14:46:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24036. [2024-11-13 14:46:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.1785313085084252) internal successors, (28326), 24035 states have internal predecessors, (28326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28326 transitions. [2024-11-13 14:46:08,595 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28326 transitions. Word has length 330 [2024-11-13 14:46:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:08,596 INFO L471 AbstractCegarLoop]: Abstraction has 24036 states and 28326 transitions. [2024-11-13 14:46:08,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28326 transitions. [2024-11-13 14:46:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-13 14:46:08,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:08,604 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 14:46:08,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:46:08,605 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:08,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash -754761094, now seen corresponding path program 1 times [2024-11-13 14:46:08,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:08,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890428500] [2024-11-13 14:46:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 14:46:09,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890428500] [2024-11-13 14:46:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890428500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:09,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:09,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:09,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478320564] [2024-11-13 14:46:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:09,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:09,195 INFO L87 Difference]: Start difference. First operand 24036 states and 28326 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:13,691 INFO L93 Difference]: Finished difference Result 60837 states and 71503 transitions. [2024-11-13 14:46:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2024-11-13 14:46:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:13,765 INFO L225 Difference]: With dead ends: 60837 [2024-11-13 14:46:13,766 INFO L226 Difference]: Without dead ends: 37554 [2024-11-13 14:46:13,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:13,786 INFO L432 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:13,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 14:46:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2024-11-13 14:46:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 35301. [2024-11-13 14:46:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 1.1668555240793201) internal successors, (41190), 35300 states have internal predecessors, (41190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 41190 transitions. [2024-11-13 14:46:14,297 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 41190 transitions. Word has length 358 [2024-11-13 14:46:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:14,297 INFO L471 AbstractCegarLoop]: Abstraction has 35301 states and 41190 transitions. [2024-11-13 14:46:14,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 41190 transitions. [2024-11-13 14:46:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-13 14:46:14,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:14,306 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 14:46:14,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:46:14,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:14,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 300552580, now seen corresponding path program 1 times [2024-11-13 14:46:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:14,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256014975] [2024-11-13 14:46:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 14:46:14,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256014975] [2024-11-13 14:46:14,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256014975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:14,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:14,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113504308] [2024-11-13 14:46:14,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:14,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:14,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:14,739 INFO L87 Difference]: Start difference. First operand 35301 states and 41190 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:18,915 INFO L93 Difference]: Finished difference Result 102893 states and 120518 transitions. [2024-11-13 14:46:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2024-11-13 14:46:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:18,985 INFO L225 Difference]: With dead ends: 102893 [2024-11-13 14:46:18,986 INFO L226 Difference]: Without dead ends: 63839 [2024-11-13 14:46:19,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:19,016 INFO L432 NwaCegarLoop]: 1307 mSDtfsCounter, 762 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:19,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 14:46:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2024-11-13 14:46:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 53325. [2024-11-13 14:46:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53325 states, 53324 states have (on average 1.1311416997974646) internal successors, (60317), 53324 states have internal predecessors, (60317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53325 states to 53325 states and 60317 transitions. [2024-11-13 14:46:20,487 INFO L78 Accepts]: Start accepts. Automaton has 53325 states and 60317 transitions. Word has length 362 [2024-11-13 14:46:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:20,488 INFO L471 AbstractCegarLoop]: Abstraction has 53325 states and 60317 transitions. [2024-11-13 14:46:20,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 53325 states and 60317 transitions. [2024-11-13 14:46:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-13 14:46:20,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:20,502 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:20,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:46:20,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:20,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1408487307, now seen corresponding path program 1 times [2024-11-13 14:46:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:20,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655857884] [2024-11-13 14:46:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:46:21,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655857884] [2024-11-13 14:46:21,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655857884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:21,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:21,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:46:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599492505] [2024-11-13 14:46:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:21,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:21,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:21,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:21,051 INFO L87 Difference]: Start difference. First operand 53325 states and 60317 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:25,171 INFO L93 Difference]: Finished difference Result 135186 states and 154639 transitions. [2024-11-13 14:46:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 369 [2024-11-13 14:46:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:25,236 INFO L225 Difference]: With dead ends: 135186 [2024-11-13 14:46:25,236 INFO L226 Difference]: Without dead ends: 82614 [2024-11-13 14:46:25,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:46:25,258 INFO L432 NwaCegarLoop]: 1228 mSDtfsCounter, 720 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:25,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1236 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 14:46:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2024-11-13 14:46:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 76606. [2024-11-13 14:46:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76606 states, 76605 states have (on average 1.1163762156517198) internal successors, (85520), 76605 states have internal predecessors, (85520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76606 states to 76606 states and 85520 transitions. [2024-11-13 14:46:26,123 INFO L78 Accepts]: Start accepts. Automaton has 76606 states and 85520 transitions. Word has length 369 [2024-11-13 14:46:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:26,124 INFO L471 AbstractCegarLoop]: Abstraction has 76606 states and 85520 transitions. [2024-11-13 14:46:26,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 76606 states and 85520 transitions. [2024-11-13 14:46:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-13 14:46:26,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:26,137 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:26,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:46:26,138 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:26,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2103592840, now seen corresponding path program 1 times [2024-11-13 14:46:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:26,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59345198] [2024-11-13 14:46:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 405 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:46:29,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59345198] [2024-11-13 14:46:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59345198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:46:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283660457] [2024-11-13 14:46:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:29,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:46:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:29,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:46:29,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:46:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:30,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:46:30,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-13 14:46:31,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:46:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283660457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:46:31,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-13 14:46:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623749384] [2024-11-13 14:46:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:31,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:46:31,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:46:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:46:31,060 INFO L87 Difference]: Start difference. First operand 76606 states and 85520 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:37,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:37,577 INFO L93 Difference]: Finished difference Result 236573 states and 265027 transitions. [2024-11-13 14:46:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:46:37,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 466 [2024-11-13 14:46:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:37,739 INFO L225 Difference]: With dead ends: 236573 [2024-11-13 14:46:37,739 INFO L226 Difference]: Without dead ends: 160720 [2024-11-13 14:46:37,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:46:37,795 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1889 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4549 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 4549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:37,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 30 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 4549 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 14:46:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160720 states. [2024-11-13 14:46:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160720 to 159216. [2024-11-13 14:46:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159216 states, 159215 states have (on average 1.1147442137989512) internal successors, (177484), 159215 states have internal predecessors, (177484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159216 states to 159216 states and 177484 transitions. [2024-11-13 14:46:40,264 INFO L78 Accepts]: Start accepts. Automaton has 159216 states and 177484 transitions. Word has length 466 [2024-11-13 14:46:40,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:40,265 INFO L471 AbstractCegarLoop]: Abstraction has 159216 states and 177484 transitions. [2024-11-13 14:46:40,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 159216 states and 177484 transitions. [2024-11-13 14:46:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-13 14:46:40,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:40,311 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:40,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:46:40,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:46:40,512 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:40,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash 67422603, now seen corresponding path program 1 times [2024-11-13 14:46:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:40,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603513046] [2024-11-13 14:46:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:40,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 372 proven. 108 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-13 14:46:42,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603513046] [2024-11-13 14:46:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603513046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:46:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965175257] [2024-11-13 14:46:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:42,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:46:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:42,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:46:42,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:46:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:43,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:46:43,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-13 14:46:43,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:46:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965175257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:46:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 14:46:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977769182] [2024-11-13 14:46:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:43,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:46:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:46:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:46:43,576 INFO L87 Difference]: Start difference. First operand 159216 states and 177484 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:48,380 INFO L93 Difference]: Finished difference Result 353727 states and 399084 transitions. [2024-11-13 14:46:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:46:48,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2024-11-13 14:46:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:48,649 INFO L225 Difference]: With dead ends: 353727 [2024-11-13 14:46:48,649 INFO L226 Difference]: Without dead ends: 195264 [2024-11-13 14:46:48,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:46:48,706 INFO L432 NwaCegarLoop]: 1389 mSDtfsCounter, 650 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:48,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1397 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 14:46:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195264 states. [2024-11-13 14:46:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195264 to 183999. [2024-11-13 14:46:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183999 states, 183998 states have (on average 1.1064902879379124) internal successors, (203592), 183998 states have internal predecessors, (203592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183999 states to 183999 states and 203592 transitions. [2024-11-13 14:46:52,717 INFO L78 Accepts]: Start accepts. Automaton has 183999 states and 203592 transitions. Word has length 518 [2024-11-13 14:46:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:46:52,718 INFO L471 AbstractCegarLoop]: Abstraction has 183999 states and 203592 transitions. [2024-11-13 14:46:52,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 183999 states and 203592 transitions. [2024-11-13 14:46:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2024-11-13 14:46:52,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:46:52,750 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:52,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:46:52,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:46:52,951 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:46:52,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash -566411825, now seen corresponding path program 1 times [2024-11-13 14:46:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885172538] [2024-11-13 14:46:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-11-13 14:46:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:54,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885172538] [2024-11-13 14:46:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885172538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:46:54,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:46:54,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:46:54,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079873001] [2024-11-13 14:46:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:46:54,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:46:54,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:46:54,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:46:54,275 INFO L87 Difference]: Start difference. First operand 183999 states and 203592 transitions. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:46:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:59,355 INFO L93 Difference]: Finished difference Result 370710 states and 409951 transitions. [2024-11-13 14:46:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:46:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 728 [2024-11-13 14:46:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:46:59,528 INFO L225 Difference]: With dead ends: 370710 [2024-11-13 14:46:59,528 INFO L226 Difference]: Without dead ends: 182207 [2024-11-13 14:46:59,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:46:59,608 INFO L432 NwaCegarLoop]: 1315 mSDtfsCounter, 796 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3967 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 3967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:46:59,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1337 Invalid, 4570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 3967 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 14:47:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182207 states. [2024-11-13 14:47:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182207 to 158465. [2024-11-13 14:47:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158465 states, 158464 states have (on average 1.0935417508077545) internal successors, (173287), 158464 states have internal predecessors, (173287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158465 states to 158465 states and 173287 transitions. [2024-11-13 14:47:02,012 INFO L78 Accepts]: Start accepts. Automaton has 158465 states and 173287 transitions. Word has length 728 [2024-11-13 14:47:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:47:02,012 INFO L471 AbstractCegarLoop]: Abstraction has 158465 states and 173287 transitions. [2024-11-13 14:47:02,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 158465 states and 173287 transitions. [2024-11-13 14:47:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2024-11-13 14:47:02,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:47:02,055 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:47:02,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:47:02,055 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:47:02,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:47:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1363488233, now seen corresponding path program 1 times [2024-11-13 14:47:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:47:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784082096] [2024-11-13 14:47:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:47:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:47:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:47:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 14:47:03,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:47:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784082096] [2024-11-13 14:47:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784082096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:47:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:47:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:47:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414654776] [2024-11-13 14:47:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:47:03,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:47:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:47:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:47:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:47:03,075 INFO L87 Difference]: Start difference. First operand 158465 states and 173287 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:47:07,694 INFO L93 Difference]: Finished difference Result 345466 states and 376460 transitions. [2024-11-13 14:47:07,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:47:07,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 728 [2024-11-13 14:47:07,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:47:07,872 INFO L225 Difference]: With dead ends: 345466 [2024-11-13 14:47:07,872 INFO L226 Difference]: Without dead ends: 187754 [2024-11-13 14:47:07,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:47:07,936 INFO L432 NwaCegarLoop]: 1179 mSDtfsCounter, 419 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:47:07,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1187 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 14:47:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187754 states. [2024-11-13 14:47:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187754 to 166726. [2024-11-13 14:47:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166726 states, 166725 states have (on average 1.0833948118158645) internal successors, (180629), 166725 states have internal predecessors, (180629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166726 states to 166726 states and 180629 transitions. [2024-11-13 14:47:10,579 INFO L78 Accepts]: Start accepts. Automaton has 166726 states and 180629 transitions. Word has length 728 [2024-11-13 14:47:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:47:10,580 INFO L471 AbstractCegarLoop]: Abstraction has 166726 states and 180629 transitions. [2024-11-13 14:47:10,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 166726 states and 180629 transitions. [2024-11-13 14:47:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2024-11-13 14:47:10,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:47:10,636 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 14:47:10,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:47:10,636 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:47:10,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:47:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash -231115771, now seen corresponding path program 1 times [2024-11-13 14:47:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:47:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083979418] [2024-11-13 14:47:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:47:10,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:47:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:47:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-13 14:47:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:47:11,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083979418] [2024-11-13 14:47:11,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083979418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:47:11,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:47:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:47:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539847477] [2024-11-13 14:47:11,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:47:11,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:47:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:47:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:47:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:47:11,454 INFO L87 Difference]: Start difference. First operand 166726 states and 180629 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:47:17,138 INFO L93 Difference]: Finished difference Result 415309 states and 450133 transitions. [2024-11-13 14:47:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:47:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 736 [2024-11-13 14:47:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:47:17,373 INFO L225 Difference]: With dead ends: 415309 [2024-11-13 14:47:17,373 INFO L226 Difference]: Without dead ends: 249336 [2024-11-13 14:47:17,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:47:17,424 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:47:17,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 354 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 14:47:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249336 states. [2024-11-13 14:47:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249336 to 229059. [2024-11-13 14:47:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229059 states, 229058 states have (on average 1.08248565865414) internal successors, (247952), 229058 states have internal predecessors, (247952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229059 states to 229059 states and 247952 transitions. [2024-11-13 14:47:21,363 INFO L78 Accepts]: Start accepts. Automaton has 229059 states and 247952 transitions. Word has length 736 [2024-11-13 14:47:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:47:21,363 INFO L471 AbstractCegarLoop]: Abstraction has 229059 states and 247952 transitions. [2024-11-13 14:47:21,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 229059 states and 247952 transitions. [2024-11-13 14:47:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2024-11-13 14:47:21,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:47:21,406 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:47:21,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:47:21,406 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:47:21,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:47:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1483032179, now seen corresponding path program 1 times [2024-11-13 14:47:21,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:47:21,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820069390] [2024-11-13 14:47:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:47:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:47:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:47:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2024-11-13 14:47:22,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:47:22,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820069390] [2024-11-13 14:47:22,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820069390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:47:22,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:47:22,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:47:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084630086] [2024-11-13 14:47:22,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:47:22,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:47:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:47:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:47:22,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:47:22,189 INFO L87 Difference]: Start difference. First operand 229059 states and 247952 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:47:27,585 INFO L93 Difference]: Finished difference Result 517445 states and 559508 transitions. [2024-11-13 14:47:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:47:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 739 [2024-11-13 14:47:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:47:27,890 INFO L225 Difference]: With dead ends: 517445 [2024-11-13 14:47:27,890 INFO L226 Difference]: Without dead ends: 288388 [2024-11-13 14:47:27,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:47:27,977 INFO L432 NwaCegarLoop]: 1272 mSDtfsCounter, 594 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:47:27,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1279 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 14:47:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288388 states. [2024-11-13 14:47:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288388 to 280878. [2024-11-13 14:47:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280878 states, 280877 states have (on average 1.0687560747230995) internal successors, (300189), 280877 states have internal predecessors, (300189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280878 states to 280878 states and 300189 transitions. [2024-11-13 14:47:32,266 INFO L78 Accepts]: Start accepts. Automaton has 280878 states and 300189 transitions. Word has length 739 [2024-11-13 14:47:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:47:32,267 INFO L471 AbstractCegarLoop]: Abstraction has 280878 states and 300189 transitions. [2024-11-13 14:47:32,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:47:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 280878 states and 300189 transitions. [2024-11-13 14:47:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2024-11-13 14:47:32,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:47:32,293 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:47:32,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:47:32,293 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:47:32,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:47:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1352900191, now seen corresponding path program 1 times [2024-11-13 14:47:32,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:47:32,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251165733] [2024-11-13 14:47:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:47:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:47:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:47:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 980 proven. 322 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-13 14:47:33,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:47:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251165733] [2024-11-13 14:47:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251165733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:47:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204632320] [2024-11-13 14:47:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:47:33,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:47:33,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:47:33,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:47:33,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2736f84-14b8-4dd9-a47a-40438bb86c66/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:47:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:47:33,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:47:33,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:47:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 1275 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-13 14:47:34,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:47:34,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204632320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:47:34,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:47:34,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 14:47:34,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722415004] [2024-11-13 14:47:34,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:47:34,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:47:34,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:47:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:47:34,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:47:34,261 INFO L87 Difference]: Start difference. First operand 280878 states and 300189 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)