./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.03.cil-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4996a252ab084c920e1b9a19c3119ce328d4cb97d6d45029062c9dac50449e19 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:07:26,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:07:26,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:07:26,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:07:26,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:07:26,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:07:26,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:07:26,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:07:26,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:07:26,552 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:07:26,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:07:26,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:07:26,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:07:26,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:07:26,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:07:26,554 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:07:26,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:07:26,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:07:26,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:07:26,555 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4996a252ab084c920e1b9a19c3119ce328d4cb97d6d45029062c9dac50449e19 [2025-02-05 16:07:26,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:07:26,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:07:26,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:07:26,815 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:07:26,815 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:07:26,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2025-02-05 16:07:28,074 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/45ebec4c2/03ed4cbb42914cefbf57b6b8b691995d/FLAG63ae78a4d [2025-02-05 16:07:28,335 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:07:28,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2025-02-05 16:07:28,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/45ebec4c2/03ed4cbb42914cefbf57b6b8b691995d/FLAG63ae78a4d [2025-02-05 16:07:28,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/45ebec4c2/03ed4cbb42914cefbf57b6b8b691995d [2025-02-05 16:07:28,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:07:28,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:07:28,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:07:28,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:07:28,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:07:28,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:28,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a019a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28, skipping insertion in model container [2025-02-05 16:07:28,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:28,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:07:28,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.03.cil-2.c[671,684] [2025-02-05 16:07:28,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:07:28,880 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:07:28,888 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.03.cil-2.c[671,684] [2025-02-05 16:07:28,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:07:28,948 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:07:28,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28 WrapperNode [2025-02-05 16:07:28,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:07:28,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:07:28,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:07:28,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:07:28,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:28,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,013 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 321 [2025-02-05 16:07:29,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:07:29,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:07:29,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:07:29,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:07:29,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,055 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]. [2025-02-05 16:07:29,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,064 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:07:29,076 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:07:29,076 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:07:29,076 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:07:29,077 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (1/1) ... [2025-02-05 16:07:29,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:07:29,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:29,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 16:07:29,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 16:07:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:07:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 16:07:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 16:07:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 16:07:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 16:07:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 16:07:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 16:07:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 16:07:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 16:07:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 16:07:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 16:07:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:07:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 16:07:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 16:07:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:07:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:07:29,215 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:07:29,218 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:07:29,715 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2025-02-05 16:07:29,716 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:07:29,731 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:07:29,733 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:07:29,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:07:29 BoogieIcfgContainer [2025-02-05 16:07:29,734 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:07:29,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:07:29,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:07:29,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:07:29,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:07:28" (1/3) ... [2025-02-05 16:07:29,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2209c076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:07:29, skipping insertion in model container [2025-02-05 16:07:29,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:28" (2/3) ... [2025-02-05 16:07:29,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2209c076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:07:29, skipping insertion in model container [2025-02-05 16:07:29,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:07:29" (3/3) ... [2025-02-05 16:07:29,742 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.c [2025-02-05 16:07:29,755 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:07:29,756 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.03.cil-2.c that has 7 procedures, 165 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-05 16:07:29,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:07:29,829 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;@68438a2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:07:29,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:07:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 140 states have (on average 1.5142857142857142) internal successors, (212), 142 states have internal predecessors, (212), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-05 16:07:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:29,842 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:29,843 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:29,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:29,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash -47220307, now seen corresponding path program 1 times [2025-02-05 16:07:29,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:29,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853503879] [2025-02-05 16:07:29,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:29,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:29,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:29,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:29,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:30,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853503879] [2025-02-05 16:07:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853503879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:07:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567370551] [2025-02-05 16:07:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:30,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:30,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:30,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:07:30,304 INFO L87 Difference]: Start difference. First operand has 165 states, 140 states have (on average 1.5142857142857142) internal successors, (212), 142 states have internal predecessors, (212), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:30,861 INFO L93 Difference]: Finished difference Result 483 states and 728 transitions. [2025-02-05 16:07:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:07:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:30,876 INFO L225 Difference]: With dead ends: 483 [2025-02-05 16:07:30,876 INFO L226 Difference]: Without dead ends: 321 [2025-02-05 16:07:30,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:30,882 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 399 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:30,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 658 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2025-02-05 16:07:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 310. [2025-02-05 16:07:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 267 states have (on average 1.4794007490636705) internal successors, (395), 269 states have internal predecessors, (395), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-02-05 16:07:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 454 transitions. [2025-02-05 16:07:30,951 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 454 transitions. Word has length 78 [2025-02-05 16:07:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:30,951 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 454 transitions. [2025-02-05 16:07:30,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 454 transitions. [2025-02-05 16:07:30,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:30,958 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:30,958 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:30,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:07:30,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:30,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2076179857, now seen corresponding path program 1 times [2025-02-05 16:07:30,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:30,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404696682] [2025-02-05 16:07:30,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:30,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:30,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:30,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:30,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404696682] [2025-02-05 16:07:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404696682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:31,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092434991] [2025-02-05 16:07:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:31,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:31,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:31,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:31,161 INFO L87 Difference]: Start difference. First operand 310 states and 454 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:31,680 INFO L93 Difference]: Finished difference Result 793 states and 1171 transitions. [2025-02-05 16:07:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:31,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:31,684 INFO L225 Difference]: With dead ends: 793 [2025-02-05 16:07:31,684 INFO L226 Difference]: Without dead ends: 494 [2025-02-05 16:07:31,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:31,686 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 387 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:31,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1183 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2025-02-05 16:07:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 451. [2025-02-05 16:07:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 389 states have (on average 1.4704370179948587) internal successors, (572), 392 states have internal predecessors, (572), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-02-05 16:07:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 658 transitions. [2025-02-05 16:07:31,723 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 658 transitions. Word has length 78 [2025-02-05 16:07:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:31,724 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 658 transitions. [2025-02-05 16:07:31,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 658 transitions. [2025-02-05 16:07:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:31,727 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:31,728 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:31,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:07:31,728 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:31,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash 44107342, now seen corresponding path program 1 times [2025-02-05 16:07:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6036954] [2025-02-05 16:07:31,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:31,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:31,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:31,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:31,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6036954] [2025-02-05 16:07:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6036954] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000530016] [2025-02-05 16:07:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:31,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:31,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:31,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:31,867 INFO L87 Difference]: Start difference. First operand 451 states and 658 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:32,325 INFO L93 Difference]: Finished difference Result 1232 states and 1814 transitions. [2025-02-05 16:07:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:32,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:32,331 INFO L225 Difference]: With dead ends: 1232 [2025-02-05 16:07:32,331 INFO L226 Difference]: Without dead ends: 792 [2025-02-05 16:07:32,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:32,336 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 382 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:32,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1167 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:32,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2025-02-05 16:07:32,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 746. [2025-02-05 16:07:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 644 states have (on average 1.4673913043478262) internal successors, (945), 651 states have internal predecessors, (945), 65 states have call successors, (65), 30 states have call predecessors, (65), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2025-02-05 16:07:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1091 transitions. [2025-02-05 16:07:32,429 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1091 transitions. Word has length 78 [2025-02-05 16:07:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:32,430 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1091 transitions. [2025-02-05 16:07:32,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1091 transitions. [2025-02-05 16:07:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:32,435 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:32,435 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:32,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:07:32,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:32,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -164590961, now seen corresponding path program 1 times [2025-02-05 16:07:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:32,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73569161] [2025-02-05 16:07:32,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:32,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:32,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:32,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:32,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:32,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73569161] [2025-02-05 16:07:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73569161] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:32,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:32,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:32,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521550019] [2025-02-05 16:07:32,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:32,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:32,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:32,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:32,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:32,550 INFO L87 Difference]: Start difference. First operand 746 states and 1091 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:33,045 INFO L93 Difference]: Finished difference Result 2157 states and 3197 transitions. [2025-02-05 16:07:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:33,058 INFO L225 Difference]: With dead ends: 2157 [2025-02-05 16:07:33,058 INFO L226 Difference]: Without dead ends: 1422 [2025-02-05 16:07:33,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:33,061 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 377 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:33,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1155 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2025-02-05 16:07:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1369. [2025-02-05 16:07:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1181 states have (on average 1.4707874682472482) internal successors, (1737), 1202 states have internal predecessors, (1737), 113 states have call successors, (113), 54 states have call predecessors, (113), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2025-02-05 16:07:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2027 transitions. [2025-02-05 16:07:33,172 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2027 transitions. Word has length 78 [2025-02-05 16:07:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:33,172 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2027 transitions. [2025-02-05 16:07:33,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2027 transitions. [2025-02-05 16:07:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:33,176 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:33,176 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:33,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:07:33,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:33,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1972438482, now seen corresponding path program 1 times [2025-02-05 16:07:33,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900278915] [2025-02-05 16:07:33,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:33,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:33,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:33,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:33,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:33,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900278915] [2025-02-05 16:07:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900278915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:33,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494301504] [2025-02-05 16:07:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:33,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:33,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:33,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:33,279 INFO L87 Difference]: Start difference. First operand 1369 states and 2027 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:33,878 INFO L93 Difference]: Finished difference Result 4328 states and 6536 transitions. [2025-02-05 16:07:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:33,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:33,897 INFO L225 Difference]: With dead ends: 4328 [2025-02-05 16:07:33,897 INFO L226 Difference]: Without dead ends: 2970 [2025-02-05 16:07:33,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:33,904 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 476 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:33,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1130 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2025-02-05 16:07:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2672. [2025-02-05 16:07:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2302 states have (on average 1.4808861859252824) internal successors, (3409), 2369 states have internal predecessors, (3409), 201 states have call successors, (201), 102 states have call predecessors, (201), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2025-02-05 16:07:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 4067 transitions. [2025-02-05 16:07:34,177 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 4067 transitions. Word has length 78 [2025-02-05 16:07:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:34,178 INFO L471 AbstractCegarLoop]: Abstraction has 2672 states and 4067 transitions. [2025-02-05 16:07:34,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 4067 transitions. [2025-02-05 16:07:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:34,182 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:34,184 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:34,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:07:34,185 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:34,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1155832495, now seen corresponding path program 1 times [2025-02-05 16:07:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:34,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499054159] [2025-02-05 16:07:34,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:34,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:34,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:34,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:34,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:34,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:34,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499054159] [2025-02-05 16:07:34,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499054159] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:34,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:34,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333928102] [2025-02-05 16:07:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:34,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:34,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:34,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:34,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:34,334 INFO L87 Difference]: Start difference. First operand 2672 states and 4067 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:35,047 INFO L93 Difference]: Finished difference Result 8527 states and 13410 transitions. [2025-02-05 16:07:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:35,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:35,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:35,090 INFO L225 Difference]: With dead ends: 8527 [2025-02-05 16:07:35,090 INFO L226 Difference]: Without dead ends: 5866 [2025-02-05 16:07:35,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:35,104 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 440 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:35,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1114 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2025-02-05 16:07:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5347. [2025-02-05 16:07:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 4567 states have (on average 1.4891613750821109) internal successors, (6801), 4780 states have internal predecessors, (6801), 369 states have call successors, (369), 198 states have call predecessors, (369), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2025-02-05 16:07:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 8563 transitions. [2025-02-05 16:07:35,528 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 8563 transitions. Word has length 78 [2025-02-05 16:07:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:35,529 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 8563 transitions. [2025-02-05 16:07:35,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 8563 transitions. [2025-02-05 16:07:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:35,535 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:35,535 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:35,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 16:07:35,536 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:35,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1256744462, now seen corresponding path program 1 times [2025-02-05 16:07:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279358540] [2025-02-05 16:07:35,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:35,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:35,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:35,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:35,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:35,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:35,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279358540] [2025-02-05 16:07:35,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279358540] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:35,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:35,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321778758] [2025-02-05 16:07:35,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:35,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:35,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:35,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:35,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:35,641 INFO L87 Difference]: Start difference. First operand 5347 states and 8563 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:36,625 INFO L93 Difference]: Finished difference Result 17082 states and 28920 transitions. [2025-02-05 16:07:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:36,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:36,715 INFO L225 Difference]: With dead ends: 17082 [2025-02-05 16:07:36,715 INFO L226 Difference]: Without dead ends: 11746 [2025-02-05 16:07:36,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:36,738 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 406 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:36,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1106 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11746 states. [2025-02-05 16:07:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 11150. [2025-02-05 16:07:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11150 states, 9404 states have (on average 1.4892598894087623) internal successors, (14005), 10071 states have internal predecessors, (14005), 689 states have call successors, (689), 390 states have call predecessors, (689), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2025-02-05 16:07:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11150 states to 11150 states and 19479 transitions. [2025-02-05 16:07:37,672 INFO L78 Accepts]: Start accepts. Automaton has 11150 states and 19479 transitions. Word has length 78 [2025-02-05 16:07:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:37,673 INFO L471 AbstractCegarLoop]: Abstraction has 11150 states and 19479 transitions. [2025-02-05 16:07:37,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 11150 states and 19479 transitions. [2025-02-05 16:07:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:37,685 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:37,685 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:37,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 16:07:37,686 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:37,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1537094351, now seen corresponding path program 1 times [2025-02-05 16:07:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:37,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964515112] [2025-02-05 16:07:37,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:37,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:37,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:37,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:37,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:37,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964515112] [2025-02-05 16:07:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964515112] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:37,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:37,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057970693] [2025-02-05 16:07:37,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:37,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:37,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:37,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:37,782 INFO L87 Difference]: Start difference. First operand 11150 states and 19479 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:39,590 INFO L93 Difference]: Finished difference Result 35145 states and 67670 transitions. [2025-02-05 16:07:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:39,871 INFO L225 Difference]: With dead ends: 35145 [2025-02-05 16:07:39,871 INFO L226 Difference]: Without dead ends: 24006 [2025-02-05 16:07:39,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:39,919 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 371 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:39,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1094 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24006 states. [2025-02-05 16:07:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24006 to 23365. [2025-02-05 16:07:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23365 states, 19249 states have (on average 1.4706738012364278) internal successors, (28309), 21310 states have internal predecessors, (28309), 1289 states have call successors, (1289), 766 states have call predecessors, (1289), 2826 states have return successors, (17673), 1416 states have call predecessors, (17673), 1289 states have call successors, (17673) [2025-02-05 16:07:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23365 states to 23365 states and 47271 transitions. [2025-02-05 16:07:41,990 INFO L78 Accepts]: Start accepts. Automaton has 23365 states and 47271 transitions. Word has length 78 [2025-02-05 16:07:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:41,991 INFO L471 AbstractCegarLoop]: Abstraction has 23365 states and 47271 transitions. [2025-02-05 16:07:41,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 23365 states and 47271 transitions. [2025-02-05 16:07:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 16:07:42,014 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:42,015 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:42,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 16:07:42,015 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:42,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -393524754, now seen corresponding path program 1 times [2025-02-05 16:07:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947662096] [2025-02-05 16:07:42,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:42,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 16:07:42,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 16:07:42,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:42,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:42,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:42,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947662096] [2025-02-05 16:07:42,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947662096] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:42,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:42,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 16:07:42,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779782464] [2025-02-05 16:07:42,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:42,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:07:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:42,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:07:42,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:07:42,075 INFO L87 Difference]: Start difference. First operand 23365 states and 47271 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:44,225 INFO L93 Difference]: Finished difference Result 59519 states and 119999 transitions. [2025-02-05 16:07:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:07:44,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2025-02-05 16:07:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:44,473 INFO L225 Difference]: With dead ends: 59519 [2025-02-05 16:07:44,473 INFO L226 Difference]: Without dead ends: 36166 [2025-02-05 16:07:44,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 16:07:44,562 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 396 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:44,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 793 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:07:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36166 states. [2025-02-05 16:07:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36166 to 33833. [2025-02-05 16:07:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33833 states, 27976 states have (on average 1.4539605376036602) internal successors, (40676), 30768 states have internal predecessors, (40676), 1974 states have call successors, (1974), 1156 states have call predecessors, (1974), 3882 states have return successors, (22391), 2036 states have call predecessors, (22391), 1974 states have call successors, (22391) [2025-02-05 16:07:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33833 states to 33833 states and 65041 transitions. [2025-02-05 16:07:47,544 INFO L78 Accepts]: Start accepts. Automaton has 33833 states and 65041 transitions. Word has length 78 [2025-02-05 16:07:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:47,545 INFO L471 AbstractCegarLoop]: Abstraction has 33833 states and 65041 transitions. [2025-02-05 16:07:47,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 33833 states and 65041 transitions. [2025-02-05 16:07:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 16:07:47,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:47,726 INFO L218 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, 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] [2025-02-05 16:07:47,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 16:07:47,726 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:47,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1133465132, now seen corresponding path program 1 times [2025-02-05 16:07:47,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:47,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737316495] [2025-02-05 16:07:47,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:47,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:47,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 16:07:47,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 16:07:47,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:47,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 16:07:47,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:47,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737316495] [2025-02-05 16:07:47,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737316495] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:47,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136095] [2025-02-05 16:07:47,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:47,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:47,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:47,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 16:07:47,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 16:07:47,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 16:07:47,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:47,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:47,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:07:47,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 16:07:48,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:07:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:48,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:07:48,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 16:07:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491956982] [2025-02-05 16:07:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:48,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:07:48,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:48,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:07:48,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:48,071 INFO L87 Difference]: Start difference. First operand 33833 states and 65041 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 16:07:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:51,327 INFO L93 Difference]: Finished difference Result 100768 states and 194659 transitions. [2025-02-05 16:07:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:07:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2025-02-05 16:07:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:51,770 INFO L225 Difference]: With dead ends: 100768 [2025-02-05 16:07:51,771 INFO L226 Difference]: Without dead ends: 66947 [2025-02-05 16:07:51,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:51,905 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 192 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:51,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 434 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:07:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66947 states. [2025-02-05 16:07:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66947 to 66363. [2025-02-05 16:07:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66363 states, 54768 states have (on average 1.4530747881974875) internal successors, (79582), 60351 states have internal predecessors, (79582), 3838 states have call successors, (3838), 2304 states have call predecessors, (3838), 7756 states have return successors, (44545), 3835 states have call predecessors, (44545), 3838 states have call successors, (44545) [2025-02-05 16:07:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66363 states to 66363 states and 127965 transitions. [2025-02-05 16:07:56,951 INFO L78 Accepts]: Start accepts. Automaton has 66363 states and 127965 transitions. Word has length 129 [2025-02-05 16:07:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:56,952 INFO L471 AbstractCegarLoop]: Abstraction has 66363 states and 127965 transitions. [2025-02-05 16:07:56,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 16:07:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 66363 states and 127965 transitions. [2025-02-05 16:07:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-05 16:07:57,085 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:57,085 INFO L218 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, 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] [2025-02-05 16:07:57,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 16:07:57,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-05 16:07:57,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:57,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash 307655950, now seen corresponding path program 1 times [2025-02-05 16:07:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189123894] [2025-02-05 16:07:57,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:57,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 16:07:57,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 16:07:57,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:57,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 16:07:57,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:57,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189123894] [2025-02-05 16:07:57,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189123894] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948218442] [2025-02-05 16:07:57,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:57,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:57,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:57,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:57,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 16:07:57,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-05 16:07:57,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-05 16:07:57,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:57,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:57,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:07:57,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 16:07:57,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:07:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948218442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:57,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:07:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 16:07:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77472644] [2025-02-05 16:07:57,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:57,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:07:57,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:57,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:07:57,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:57,827 INFO L87 Difference]: Start difference. First operand 66363 states and 127965 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 16:08:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:03,449 INFO L93 Difference]: Finished difference Result 197628 states and 382995 transitions. [2025-02-05 16:08:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:08:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2025-02-05 16:08:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:04,222 INFO L225 Difference]: With dead ends: 197628 [2025-02-05 16:08:04,222 INFO L226 Difference]: Without dead ends: 131277 [2025-02-05 16:08:04,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:08:04,656 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 186 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:04,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 434 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:08:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131277 states.