./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 738a2e75c3974a334a4730af8ad8a1bca696e22b6aef9e5670f827b7767c7884 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 04:11:56,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 04:11:56,479 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 04:11:56,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 04:11:56,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 04:11:56,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 04:11:56,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 04:11:56,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 04:11:56,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 04:11:56,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 04:11:56,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 04:11:56,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 04:11:56,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 04:11:56,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 04:11:56,516 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 04:11:56,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 04:11:56,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 04:11:56,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 04:11:56,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 04:11:56,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 04:11:56,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 04:11:56,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 04:11:56,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 04:11:56,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 04:11:56,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 04:11:56,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 04:11:56,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 04:11:56,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 04:11:56,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 04:11:56,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 04:11:56,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 04:11:56,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 04:11:56,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:11:56,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 04:11:56,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 04:11:56,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 04:11:56,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 04:11:56,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 04:11:56,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 04:11:56,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 04:11:56,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 04:11:56,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 04:11:56,532 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 738a2e75c3974a334a4730af8ad8a1bca696e22b6aef9e5670f827b7767c7884 [2024-10-11 04:11:56,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 04:11:56,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 04:11:56,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 04:11:56,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 04:11:56,826 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 04:11:56,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c [2024-10-11 04:11:58,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 04:11:58,917 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 04:11:58,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c [2024-10-11 04:11:58,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/697d3f2af/baf3cfadfacd422986c34142d309a66d/FLAG21721232b [2024-10-11 04:11:59,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/697d3f2af/baf3cfadfacd422986c34142d309a66d [2024-10-11 04:11:59,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 04:11:59,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 04:11:59,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 04:11:59,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 04:11:59,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 04:11:59,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:11:59" (1/1) ... [2024-10-11 04:11:59,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b7ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:59, skipping insertion in model container [2024-10-11 04:11:59,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:11:59" (1/1) ... [2024-10-11 04:11:59,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 04:12:00,919 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c[376251,376264] [2024-10-11 04:12:00,960 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c[383339,383352] [2024-10-11 04:12:01,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:12:01,101 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 04:12:01,927 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c[376251,376264] [2024-10-11 04:12:01,936 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c[383339,383352] [2024-10-11 04:12:01,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:12:02,040 INFO L204 MainTranslator]: Completed translation [2024-10-11 04:12:02,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02 WrapperNode [2024-10-11 04:12:02,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 04:12:02,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 04:12:02,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 04:12:02,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 04:12:02,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,497 INFO L138 Inliner]: procedures = 46, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12573 [2024-10-11 04:12:02,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 04:12:02,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 04:12:02,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 04:12:02,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 04:12:02,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,576 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,810 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 04:12:02,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:02,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:03,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:03,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:03,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:03,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 04:12:03,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 04:12:03,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 04:12:03,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 04:12:03,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (1/1) ... [2024-10-11 04:12:03,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:12:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:03,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 04:12:03,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 04:12:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 04:12:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-11 04:12:03,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-11 04:12:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-11 04:12:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-11 04:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-11 04:12:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-11 04:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-11 04:12:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-11 04:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-11 04:12:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-11 04:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 04:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-11 04:12:03,415 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-11 04:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 04:12:03,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 04:12:03,575 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 04:12:03,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 04:12:11,341 INFO L? ?]: Removed 1689 outVars from TransFormulas that were not future-live. [2024-10-11 04:12:11,341 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 04:12:11,445 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 04:12:11,445 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-11 04:12:11,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:12:11 BoogieIcfgContainer [2024-10-11 04:12:11,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 04:12:11,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 04:12:11,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 04:12:11,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 04:12:11,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:11:59" (1/3) ... [2024-10-11 04:12:11,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b39f2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:12:11, skipping insertion in model container [2024-10-11 04:12:11,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:12:02" (2/3) ... [2024-10-11 04:12:11,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b39f2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:12:11, skipping insertion in model container [2024-10-11 04:12:11,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:12:11" (3/3) ... [2024-10-11 04:12:11,456 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.01.cil-1.c [2024-10-11 04:12:11,475 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 04:12:11,476 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 04:12:11,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 04:12:11,610 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;@7b46c87a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 04:12:11,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 04:12:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 2194 states have (on average 1.8869644484958978) internal successors, (4140), 2197 states have internal predecessors, (4140), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-11 04:12:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 04:12:11,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:11,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:11,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:11,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash -231353693, now seen corresponding path program 1 times [2024-10-11 04:12:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175152380] [2024-10-11 04:12:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:12,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:12,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:12,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:12,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:12,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175152380] [2024-10-11 04:12:12,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175152380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:12,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:12,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:12:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139066797] [2024-10-11 04:12:12,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:12,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:12:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:12:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:12,172 INFO L87 Difference]: Start difference. First operand has 2218 states, 2194 states have (on average 1.8869644484958978) internal successors, (4140), 2197 states have internal predecessors, (4140), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:13,000 INFO L93 Difference]: Finished difference Result 4554 states and 8527 transitions. [2024-10-11 04:12:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 04:12:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 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 51 [2024-10-11 04:12:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:13,032 INFO L225 Difference]: With dead ends: 4554 [2024-10-11 04:12:13,032 INFO L226 Difference]: Without dead ends: 2337 [2024-10-11 04:12:13,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:12:13,050 INFO L432 NwaCegarLoop]: 4040 mSDtfsCounter, 4241 mSDsluCounter, 12089 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 16129 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:13,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4249 Valid, 16129 Invalid, 518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:12:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2024-10-11 04:12:13,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2298. [2024-10-11 04:12:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2258 states have (on average 1.8432240921169176) internal successors, (4162), 2261 states have internal predecessors, (4162), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2024-10-11 04:12:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4215 transitions. [2024-10-11 04:12:13,218 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4215 transitions. Word has length 51 [2024-10-11 04:12:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:13,218 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 4215 transitions. [2024-10-11 04:12:13,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4215 transitions. [2024-10-11 04:12:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 04:12:13,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:13,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:13,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 04:12:13,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:13,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash 614994855, now seen corresponding path program 1 times [2024-10-11 04:12:13,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:13,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708128329] [2024-10-11 04:12:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:13,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:13,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:13,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:13,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:13,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:13,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708128329] [2024-10-11 04:12:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708128329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:13,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:12:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190943799] [2024-10-11 04:12:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:13,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:12:13,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:12:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:13,450 INFO L87 Difference]: Start difference. First operand 2298 states and 4215 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:14,473 INFO L93 Difference]: Finished difference Result 2608 states and 4667 transitions. [2024-10-11 04:12:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 04:12:14,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 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 51 [2024-10-11 04:12:14,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:14,487 INFO L225 Difference]: With dead ends: 2608 [2024-10-11 04:12:14,487 INFO L226 Difference]: Without dead ends: 2438 [2024-10-11 04:12:14,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 04:12:14,492 INFO L432 NwaCegarLoop]: 4091 mSDtfsCounter, 4227 mSDsluCounter, 16209 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 20300 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:14,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 20300 Invalid, 781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 04:12:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2024-10-11 04:12:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2377. [2024-10-11 04:12:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2320 states have (on average 1.8323275862068966) internal successors, (4251), 2324 states have internal predecessors, (4251), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2024-10-11 04:12:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4326 transitions. [2024-10-11 04:12:14,571 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4326 transitions. Word has length 51 [2024-10-11 04:12:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:14,572 INFO L471 AbstractCegarLoop]: Abstraction has 2377 states and 4326 transitions. [2024-10-11 04:12:14,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4326 transitions. [2024-10-11 04:12:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 04:12:14,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:14,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:14,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 04:12:14,575 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:14,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash -756812443, now seen corresponding path program 1 times [2024-10-11 04:12:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:14,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475557133] [2024-10-11 04:12:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:14,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:14,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:14,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:14,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:14,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:14,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475557133] [2024-10-11 04:12:14,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475557133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:14,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:14,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:12:14,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039560352] [2024-10-11 04:12:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:14,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:12:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:12:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:14,737 INFO L87 Difference]: Start difference. First operand 2377 states and 4326 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:15,549 INFO L93 Difference]: Finished difference Result 2918 states and 5108 transitions. [2024-10-11 04:12:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 04:12:15,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 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 51 [2024-10-11 04:12:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:15,566 INFO L225 Difference]: With dead ends: 2918 [2024-10-11 04:12:15,566 INFO L226 Difference]: Without dead ends: 2669 [2024-10-11 04:12:15,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-11 04:12:15,571 INFO L432 NwaCegarLoop]: 4087 mSDtfsCounter, 4274 mSDsluCounter, 16204 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 20291 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:15,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 20291 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:12:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2024-10-11 04:12:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2532. [2024-10-11 04:12:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2443 states have (on average 1.8125255832992222) internal successors, (4428), 2449 states have internal predecessors, (4428), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2024-10-11 04:12:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 4547 transitions. [2024-10-11 04:12:15,659 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 4547 transitions. Word has length 51 [2024-10-11 04:12:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:15,660 INFO L471 AbstractCegarLoop]: Abstraction has 2532 states and 4547 transitions. [2024-10-11 04:12:15,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 4547 transitions. [2024-10-11 04:12:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 04:12:15,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:15,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:15,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 04:12:15,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:15,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1692787687, now seen corresponding path program 1 times [2024-10-11 04:12:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758843058] [2024-10-11 04:12:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:15,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:15,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:15,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:15,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:15,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758843058] [2024-10-11 04:12:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758843058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:15,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:15,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:12:15,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816157831] [2024-10-11 04:12:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:15,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:12:15,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:12:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:15,841 INFO L87 Difference]: Start difference. First operand 2532 states and 4547 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:16,650 INFO L93 Difference]: Finished difference Result 3404 states and 5803 transitions. [2024-10-11 04:12:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 04:12:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 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 51 [2024-10-11 04:12:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:16,666 INFO L225 Difference]: With dead ends: 3404 [2024-10-11 04:12:16,666 INFO L226 Difference]: Without dead ends: 3000 [2024-10-11 04:12:16,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-11 04:12:16,670 INFO L432 NwaCegarLoop]: 4076 mSDtfsCounter, 4221 mSDsluCounter, 16189 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4228 SdHoareTripleChecker+Valid, 20265 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:16,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4228 Valid, 20265 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:12:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2024-10-11 04:12:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2813. [2024-10-11 04:12:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2666 states have (on average 1.7801950487621905) internal successors, (4746), 2676 states have internal predecessors, (4746), 85 states have call successors, (85), 52 states have call predecessors, (85), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2024-10-11 04:12:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4951 transitions. [2024-10-11 04:12:16,865 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4951 transitions. Word has length 51 [2024-10-11 04:12:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:16,866 INFO L471 AbstractCegarLoop]: Abstraction has 2813 states and 4951 transitions. [2024-10-11 04:12:16,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4951 transitions. [2024-10-11 04:12:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 04:12:16,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:16,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:16,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 04:12:16,870 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:16,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash 663428389, now seen corresponding path program 1 times [2024-10-11 04:12:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:16,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110224491] [2024-10-11 04:12:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:16,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:16,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:16,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:16,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:16,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:16,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110224491] [2024-10-11 04:12:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110224491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:16,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:12:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649955467] [2024-10-11 04:12:16,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:16,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:12:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:12:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:16,953 INFO L87 Difference]: Start difference. First operand 2813 states and 4951 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:17,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:17,594 INFO L93 Difference]: Finished difference Result 4060 states and 6755 transitions. [2024-10-11 04:12:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 04:12:17,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 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 51 [2024-10-11 04:12:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:17,611 INFO L225 Difference]: With dead ends: 4060 [2024-10-11 04:12:17,611 INFO L226 Difference]: Without dead ends: 3376 [2024-10-11 04:12:17,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 04:12:17,616 INFO L432 NwaCegarLoop]: 4106 mSDtfsCounter, 4332 mSDsluCounter, 12095 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 16201 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:17,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 16201 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 04:12:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2024-10-11 04:12:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3185. [2024-10-11 04:12:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 2955 states have (on average 1.740439932318105) internal successors, (5143), 2974 states have internal predecessors, (5143), 134 states have call successors, (134), 82 states have call predecessors, (134), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2024-10-11 04:12:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 5456 transitions. [2024-10-11 04:12:17,730 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 5456 transitions. Word has length 51 [2024-10-11 04:12:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:17,731 INFO L471 AbstractCegarLoop]: Abstraction has 3185 states and 5456 transitions. [2024-10-11 04:12:17,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 04:12:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 5456 transitions. [2024-10-11 04:12:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-11 04:12:17,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:17,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:17,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 04:12:17,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:17,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2142327730, now seen corresponding path program 1 times [2024-10-11 04:12:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:17,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067431689] [2024-10-11 04:12:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-11 04:12:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-11 04:12:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 04:12:17,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067431689] [2024-10-11 04:12:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067431689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7773776] [2024-10-11 04:12:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:17,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:17,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:17,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:17,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 04:12:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:17,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 04:12:17,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 04:12:17,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7773776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:17,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:17,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-11 04:12:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183485228] [2024-10-11 04:12:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:17,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:17,982 INFO L87 Difference]: Start difference. First operand 3185 states and 5456 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:18,154 INFO L93 Difference]: Finished difference Result 5213 states and 8379 transitions. [2024-10-11 04:12:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:18,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2024-10-11 04:12:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:18,177 INFO L225 Difference]: With dead ends: 5213 [2024-10-11 04:12:18,177 INFO L226 Difference]: Without dead ends: 4158 [2024-10-11 04:12:18,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:18,186 INFO L432 NwaCegarLoop]: 4182 mSDtfsCounter, 107 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:18,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 8258 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2024-10-11 04:12:18,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4158. [2024-10-11 04:12:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 3719 states have (on average 1.6681903737563861) internal successors, (6204), 3751 states have internal predecessors, (6204), 253 states have call successors, (253), 160 states have call predecessors, (253), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2024-10-11 04:12:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 6833 transitions. [2024-10-11 04:12:18,504 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 6833 transitions. Word has length 83 [2024-10-11 04:12:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:18,504 INFO L471 AbstractCegarLoop]: Abstraction has 4158 states and 6833 transitions. [2024-10-11 04:12:18,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 6833 transitions. [2024-10-11 04:12:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-11 04:12:18,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:18,512 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-11 04:12:18,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 04:12:18,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:18,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:18,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:18,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2141610504, now seen corresponding path program 1 times [2024-10-11 04:12:18,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:18,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092569376] [2024-10-11 04:12:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-11 04:12:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-11 04:12:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-11 04:12:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 04:12:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092569376] [2024-10-11 04:12:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092569376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527275394] [2024-10-11 04:12:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:18,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:18,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:18,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:18,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 04:12:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:18,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 04:12:18,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 04:12:19,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527275394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:19,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:19,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-11 04:12:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566024296] [2024-10-11 04:12:19,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:19,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:19,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:19,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:19,073 INFO L87 Difference]: Start difference. First operand 4158 states and 6833 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-11 04:12:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:19,442 INFO L93 Difference]: Finished difference Result 8088 states and 12416 transitions. [2024-10-11 04:12:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2024-10-11 04:12:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:19,480 INFO L225 Difference]: With dead ends: 8088 [2024-10-11 04:12:19,480 INFO L226 Difference]: Without dead ends: 6063 [2024-10-11 04:12:19,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:19,497 INFO L432 NwaCegarLoop]: 4087 mSDtfsCounter, 4024 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4024 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:19,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4024 Valid, 4193 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2024-10-11 04:12:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 6033. [2024-10-11 04:12:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6033 states, 5200 states have (on average 1.585576923076923) internal successors, (8245), 5261 states have internal predecessors, (8245), 473 states have call successors, (473), 310 states have call predecessors, (473), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2024-10-11 04:12:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 9406 transitions. [2024-10-11 04:12:19,950 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 9406 transitions. Word has length 106 [2024-10-11 04:12:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:19,950 INFO L471 AbstractCegarLoop]: Abstraction has 6033 states and 9406 transitions. [2024-10-11 04:12:19,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-11 04:12:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 9406 transitions. [2024-10-11 04:12:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-11 04:12:19,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:19,964 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:19,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 04:12:20,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:20,169 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:20,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash -444207162, now seen corresponding path program 1 times [2024-10-11 04:12:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988875301] [2024-10-11 04:12:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 04:12:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 04:12:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-11 04:12:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-11 04:12:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-11 04:12:20,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:20,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988875301] [2024-10-11 04:12:20,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988875301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:20,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441298347] [2024-10-11 04:12:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:20,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:20,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:20,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:20,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 04:12:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:20,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 04:12:20,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-11 04:12:20,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441298347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:20,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-11 04:12:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771401580] [2024-10-11 04:12:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:20,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:20,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:20,539 INFO L87 Difference]: Start difference. First operand 6033 states and 9406 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 04:12:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:20,803 INFO L93 Difference]: Finished difference Result 9045 states and 13625 transitions. [2024-10-11 04:12:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 121 [2024-10-11 04:12:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:20,834 INFO L225 Difference]: With dead ends: 9045 [2024-10-11 04:12:20,834 INFO L226 Difference]: Without dead ends: 6321 [2024-10-11 04:12:20,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:20,846 INFO L432 NwaCegarLoop]: 4099 mSDtfsCounter, 4052 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4052 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:20,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4052 Valid, 4211 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2024-10-11 04:12:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 6283. [2024-10-11 04:12:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 5418 states have (on average 1.5612772240679218) internal successors, (8459), 5479 states have internal predecessors, (8459), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2024-10-11 04:12:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 9658 transitions. [2024-10-11 04:12:21,149 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 9658 transitions. Word has length 121 [2024-10-11 04:12:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:21,149 INFO L471 AbstractCegarLoop]: Abstraction has 6283 states and 9658 transitions. [2024-10-11 04:12:21,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-11 04:12:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 9658 transitions. [2024-10-11 04:12:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-11 04:12:21,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:21,161 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:21,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 04:12:21,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:21,362 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:21,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2140200845, now seen corresponding path program 1 times [2024-10-11 04:12:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27042463] [2024-10-11 04:12:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-11 04:12:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-11 04:12:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-11 04:12:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-11 04:12:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-11 04:12:21,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27042463] [2024-10-11 04:12:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27042463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739129165] [2024-10-11 04:12:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:21,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:21,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:21,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:21,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 04:12:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:21,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 04:12:21,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 04:12:21,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:21,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739129165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:21,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:21,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-11 04:12:21,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086005771] [2024-10-11 04:12:21,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:21,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:21,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:21,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:21,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:21,604 INFO L87 Difference]: Start difference. First operand 6283 states and 9658 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-11 04:12:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:22,080 INFO L93 Difference]: Finished difference Result 14267 states and 20760 transitions. [2024-10-11 04:12:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:22,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2024-10-11 04:12:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:22,139 INFO L225 Difference]: With dead ends: 14267 [2024-10-11 04:12:22,139 INFO L226 Difference]: Without dead ends: 10119 [2024-10-11 04:12:22,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:22,160 INFO L432 NwaCegarLoop]: 4180 mSDtfsCounter, 108 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 8256 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:22,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 8256 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10119 states. [2024-10-11 04:12:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10119 to 10105. [2024-10-11 04:12:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10105 states, 8426 states have (on average 1.4767386660337052) internal successors, (12443), 8547 states have internal predecessors, (12443), 925 states have call successors, (925), 656 states have call predecessors, (925), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2024-10-11 04:12:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10105 states to 10105 states and 14918 transitions. [2024-10-11 04:12:22,849 INFO L78 Accepts]: Start accepts. Automaton has 10105 states and 14918 transitions. Word has length 122 [2024-10-11 04:12:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:22,851 INFO L471 AbstractCegarLoop]: Abstraction has 10105 states and 14918 transitions. [2024-10-11 04:12:22,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-11 04:12:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 10105 states and 14918 transitions. [2024-10-11 04:12:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-11 04:12:22,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:22,878 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:22,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 04:12:23,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 04:12:23,079 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:23,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1739388555, now seen corresponding path program 1 times [2024-10-11 04:12:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:23,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076851037] [2024-10-11 04:12:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-11 04:12:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 04:12:23,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:23,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076851037] [2024-10-11 04:12:23,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076851037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:23,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107015094] [2024-10-11 04:12:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:23,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:23,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:23,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:23,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 04:12:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:23,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 04:12:23,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 04:12:23,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107015094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-11 04:12:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469364322] [2024-10-11 04:12:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:23,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:23,370 INFO L87 Difference]: Start difference. First operand 10105 states and 14918 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-11 04:12:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:23,872 INFO L93 Difference]: Finished difference Result 14225 states and 20906 transitions. [2024-10-11 04:12:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-10-11 04:12:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:23,921 INFO L225 Difference]: With dead ends: 14225 [2024-10-11 04:12:23,921 INFO L226 Difference]: Without dead ends: 10123 [2024-10-11 04:12:23,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:23,939 INFO L432 NwaCegarLoop]: 4148 mSDtfsCounter, 94 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 8219 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:23,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 8219 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10123 states. [2024-10-11 04:12:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10123 to 10081. [2024-10-11 04:12:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 8402 states have (on average 1.4623899071649606) internal successors, (12287), 8523 states have internal predecessors, (12287), 925 states have call successors, (925), 656 states have call predecessors, (925), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2024-10-11 04:12:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 14762 transitions. [2024-10-11 04:12:24,482 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 14762 transitions. Word has length 123 [2024-10-11 04:12:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:24,483 INFO L471 AbstractCegarLoop]: Abstraction has 10081 states and 14762 transitions. [2024-10-11 04:12:24,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-11 04:12:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 14762 transitions. [2024-10-11 04:12:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-11 04:12:24,502 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:24,503 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:24,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 04:12:24,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 04:12:24,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:24,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 448590933, now seen corresponding path program 1 times [2024-10-11 04:12:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228527959] [2024-10-11 04:12:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-11 04:12:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 04:12:24,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228527959] [2024-10-11 04:12:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228527959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828568919] [2024-10-11 04:12:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:24,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:24,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:24,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:24,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 04:12:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:24,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 04:12:24,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 04:12:24,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828568919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:24,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:24,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-11 04:12:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615952427] [2024-10-11 04:12:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:24,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:24,950 INFO L87 Difference]: Start difference. First operand 10081 states and 14762 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-11 04:12:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:25,445 INFO L93 Difference]: Finished difference Result 15923 states and 22966 transitions. [2024-10-11 04:12:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-10-11 04:12:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:25,486 INFO L225 Difference]: With dead ends: 15923 [2024-10-11 04:12:25,486 INFO L226 Difference]: Without dead ends: 8949 [2024-10-11 04:12:25,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:12:25,510 INFO L432 NwaCegarLoop]: 4080 mSDtfsCounter, 4069 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 4100 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:25,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 4100 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2024-10-11 04:12:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 8541. [2024-10-11 04:12:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8541 states, 7188 states have (on average 1.444769059543684) internal successors, (10385), 7277 states have internal predecessors, (10385), 753 states have call successors, (753), 534 states have call predecessors, (753), 598 states have return successors, (1098), 745 states have call predecessors, (1098), 753 states have call successors, (1098) [2024-10-11 04:12:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8541 states to 8541 states and 12236 transitions. [2024-10-11 04:12:26,220 INFO L78 Accepts]: Start accepts. Automaton has 8541 states and 12236 transitions. Word has length 123 [2024-10-11 04:12:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:26,221 INFO L471 AbstractCegarLoop]: Abstraction has 8541 states and 12236 transitions. [2024-10-11 04:12:26,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-11 04:12:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8541 states and 12236 transitions. [2024-10-11 04:12:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-11 04:12:26,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:26,236 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:26,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 04:12:26,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 04:12:26,437 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:26,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash 901967092, now seen corresponding path program 1 times [2024-10-11 04:12:26,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:26,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762290922] [2024-10-11 04:12:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:26,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 04:12:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 04:12:26,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762290922] [2024-10-11 04:12:26,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762290922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393519999] [2024-10-11 04:12:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:26,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:26,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:26,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:26,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 04:12:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:26,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 04:12:26,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 04:12:26,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:26,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393519999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:26,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:26,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-11 04:12:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662186136] [2024-10-11 04:12:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:26,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:12:26,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:12:26,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:12:26,791 INFO L87 Difference]: Start difference. First operand 8541 states and 12236 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:27,291 INFO L93 Difference]: Finished difference Result 11039 states and 15585 transitions. [2024-10-11 04:12:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:12:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2024-10-11 04:12:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:27,329 INFO L225 Difference]: With dead ends: 11039 [2024-10-11 04:12:27,330 INFO L226 Difference]: Without dead ends: 6877 [2024-10-11 04:12:27,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-11 04:12:27,347 INFO L432 NwaCegarLoop]: 4033 mSDtfsCounter, 4086 mSDsluCounter, 8026 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 12059 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:27,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 12059 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:12:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2024-10-11 04:12:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 6853. [2024-10-11 04:12:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 5858 states have (on average 1.4617616934107205) internal successors, (8563), 5911 states have internal predecessors, (8563), 565 states have call successors, (565), 396 states have call predecessors, (565), 428 states have return successors, (766), 553 states have call predecessors, (766), 565 states have call successors, (766) [2024-10-11 04:12:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 9894 transitions. [2024-10-11 04:12:27,702 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 9894 transitions. Word has length 124 [2024-10-11 04:12:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:27,703 INFO L471 AbstractCegarLoop]: Abstraction has 6853 states and 9894 transitions. [2024-10-11 04:12:27,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 9894 transitions. [2024-10-11 04:12:27,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-11 04:12:27,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:27,712 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:27,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 04:12:27,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:27,916 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:27,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:27,917 INFO L85 PathProgramCache]: Analyzing trace with hash 18458102, now seen corresponding path program 1 times [2024-10-11 04:12:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917086882] [2024-10-11 04:12:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:27,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:27,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:27,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:27,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 04:12:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 04:12:28,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917086882] [2024-10-11 04:12:28,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917086882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548326834] [2024-10-11 04:12:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:28,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:28,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:28,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:28,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 04:12:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:28,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 04:12:28,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 04:12:28,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:28,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548326834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:28,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:28,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-11 04:12:28,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999733538] [2024-10-11 04:12:28,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:28,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:12:28,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:28,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:12:28,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 04:12:28,200 INFO L87 Difference]: Start difference. First operand 6853 states and 9894 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:28,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:28,707 INFO L93 Difference]: Finished difference Result 10693 states and 14934 transitions. [2024-10-11 04:12:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:12:28,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2024-10-11 04:12:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:28,729 INFO L225 Difference]: With dead ends: 10693 [2024-10-11 04:12:28,729 INFO L226 Difference]: Without dead ends: 6507 [2024-10-11 04:12:28,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:12:28,741 INFO L432 NwaCegarLoop]: 4031 mSDtfsCounter, 4116 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4125 SdHoareTripleChecker+Valid, 12053 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:28,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4125 Valid, 12053 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:12:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2024-10-11 04:12:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 4943. [2024-10-11 04:12:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4368 states have (on average 1.5137362637362637) internal successors, (6612), 4397 states have internal predecessors, (6612), 329 states have call successors, (329), 228 states have call predecessors, (329), 244 states have return successors, (439), 321 states have call predecessors, (439), 329 states have call successors, (439) [2024-10-11 04:12:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7380 transitions. [2024-10-11 04:12:28,978 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7380 transitions. Word has length 124 [2024-10-11 04:12:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:28,978 INFO L471 AbstractCegarLoop]: Abstraction has 4943 states and 7380 transitions. [2024-10-11 04:12:28,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7380 transitions. [2024-10-11 04:12:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-11 04:12:28,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:28,983 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:29,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 04:12:29,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 04:12:29,185 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:29,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash -10042188, now seen corresponding path program 1 times [2024-10-11 04:12:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:29,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008217680] [2024-10-11 04:12:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 04:12:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 04:12:29,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008217680] [2024-10-11 04:12:29,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008217680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538211976] [2024-10-11 04:12:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:29,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:29,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:29,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:29,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 04:12:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:29,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 04:12:29,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-11 04:12:29,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:29,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538211976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:29,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:29,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-11 04:12:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565687521] [2024-10-11 04:12:29,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:29,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:12:29,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:29,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:12:29,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:29,383 INFO L87 Difference]: Start difference. First operand 4943 states and 7380 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:29,621 INFO L93 Difference]: Finished difference Result 6751 states and 9638 transitions. [2024-10-11 04:12:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:12:29,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2024-10-11 04:12:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:29,639 INFO L225 Difference]: With dead ends: 6751 [2024-10-11 04:12:29,639 INFO L226 Difference]: Without dead ends: 3940 [2024-10-11 04:12:29,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:29,649 INFO L432 NwaCegarLoop]: 4072 mSDtfsCounter, 0 mSDsluCounter, 8139 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12211 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:29,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12211 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2024-10-11 04:12:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3940. [2024-10-11 04:12:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3575 states have (on average 1.577062937062937) internal successors, (5638), 3592 states have internal predecessors, (5638), 207 states have call successors, (207), 146 states have call predecessors, (207), 156 states have return successors, (250), 203 states have call predecessors, (250), 207 states have call successors, (250) [2024-10-11 04:12:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 6095 transitions. [2024-10-11 04:12:29,821 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 6095 transitions. Word has length 124 [2024-10-11 04:12:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:29,822 INFO L471 AbstractCegarLoop]: Abstraction has 3940 states and 6095 transitions. [2024-10-11 04:12:29,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 6095 transitions. [2024-10-11 04:12:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-11 04:12:29,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:29,827 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:29,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 04:12:30,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:30,031 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:30,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash -505096204, now seen corresponding path program 1 times [2024-10-11 04:12:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:30,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877669145] [2024-10-11 04:12:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:30,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 04:12:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-11 04:12:30,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:30,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877669145] [2024-10-11 04:12:30,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877669145] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:12:30,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123631076] [2024-10-11 04:12:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:30,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:12:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:12:30,147 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:12:30,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 04:12:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 04:12:30,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:12:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-11 04:12:30,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 04:12:30,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123631076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:30,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 04:12:30,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-11 04:12:30,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273339223] [2024-10-11 04:12:30,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:30,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:12:30,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:12:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:30,250 INFO L87 Difference]: Start difference. First operand 3940 states and 6095 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:30,400 INFO L93 Difference]: Finished difference Result 5019 states and 7383 transitions. [2024-10-11 04:12:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:12:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2024-10-11 04:12:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:30,412 INFO L225 Difference]: With dead ends: 5019 [2024-10-11 04:12:30,413 INFO L226 Difference]: Without dead ends: 2840 [2024-10-11 04:12:30,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:30,420 INFO L432 NwaCegarLoop]: 4071 mSDtfsCounter, 0 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12208 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:30,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12208 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:12:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2024-10-11 04:12:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2840. [2024-10-11 04:12:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2694 states have (on average 1.7071269487750558) internal successors, (4599), 2702 states have internal predecessors, (4599), 83 states have call successors, (83), 57 states have call predecessors, (83), 61 states have return successors, (87), 81 states have call predecessors, (87), 83 states have call successors, (87) [2024-10-11 04:12:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4769 transitions. [2024-10-11 04:12:30,506 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4769 transitions. Word has length 124 [2024-10-11 04:12:30,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:30,506 INFO L471 AbstractCegarLoop]: Abstraction has 2840 states and 4769 transitions. [2024-10-11 04:12:30,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 04:12:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4769 transitions. [2024-10-11 04:12:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-11 04:12:30,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:30,508 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:30,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 04:12:30,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 04:12:30,713 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:30,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash 78029492, now seen corresponding path program 1 times [2024-10-11 04:12:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129983854] [2024-10-11 04:12:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 04:12:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 04:12:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 04:12:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 04:12:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 04:12:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 04:12:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 04:12:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 04:12:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-11 04:12:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 04:12:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-11 04:12:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129983854] [2024-10-11 04:12:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129983854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:30,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:12:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155289642] [2024-10-11 04:12:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:30,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:12:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:12:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:12:30,876 INFO L87 Difference]: Start difference. First operand 2840 states and 4769 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-11 04:12:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:31,321 INFO L93 Difference]: Finished difference Result 2860 states and 4789 transitions. [2024-10-11 04:12:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 04:12:31,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 124 [2024-10-11 04:12:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:31,328 INFO L225 Difference]: With dead ends: 2860 [2024-10-11 04:12:31,328 INFO L226 Difference]: Without dead ends: 2122 [2024-10-11 04:12:31,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 04:12:31,331 INFO L432 NwaCegarLoop]: 4073 mSDtfsCounter, 4280 mSDsluCounter, 12063 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 16136 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:31,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4303 Valid, 16136 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 04:12:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2024-10-11 04:12:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2024-10-11 04:12:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.866100895803866) internal successors, (3958), 2121 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3958 transitions. [2024-10-11 04:12:31,366 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3958 transitions. Word has length 124 [2024-10-11 04:12:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:31,366 INFO L471 AbstractCegarLoop]: Abstraction has 2122 states and 3958 transitions. [2024-10-11 04:12:31,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-11 04:12:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3958 transitions. [2024-10-11 04:12:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1646 [2024-10-11 04:12:31,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:31,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:31,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 04:12:31,424 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:31,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash -534684201, now seen corresponding path program 1 times [2024-10-11 04:12:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:31,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332759134] [2024-10-11 04:12:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:33,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:33,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332759134] [2024-10-11 04:12:33,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332759134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:33,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:33,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:12:33,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506412965] [2024-10-11 04:12:33,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:33,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:33,511 INFO L87 Difference]: Start difference. First operand 2122 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 2 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:39,251 INFO L93 Difference]: Finished difference Result 6057 states and 11374 transitions. [2024-10-11 04:12:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:39,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 2 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1645 [2024-10-11 04:12:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:39,268 INFO L225 Difference]: With dead ends: 6057 [2024-10-11 04:12:39,268 INFO L226 Difference]: Without dead ends: 3937 [2024-10-11 04:12:39,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:39,274 INFO L432 NwaCegarLoop]: 1256 mSDtfsCounter, 621 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 2591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 7543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2591 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:39,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1410 Invalid, 7543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2591 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-10-11 04:12:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2024-10-11 04:12:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3921. [2024-10-11 04:12:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3920 states have (on average 1.7311224489795918) internal successors, (6786), 3920 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6786 transitions. [2024-10-11 04:12:39,346 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 6786 transitions. Word has length 1645 [2024-10-11 04:12:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:39,349 INFO L471 AbstractCegarLoop]: Abstraction has 3921 states and 6786 transitions. [2024-10-11 04:12:39,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 2 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 6786 transitions. [2024-10-11 04:12:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1657 [2024-10-11 04:12:39,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:39,430 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:39,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 04:12:39,430 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:39,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1467008160, now seen corresponding path program 1 times [2024-10-11 04:12:39,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:39,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006171957] [2024-10-11 04:12:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006171957] [2024-10-11 04:12:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006171957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:40,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:12:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981179039] [2024-10-11 04:12:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:40,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:40,502 INFO L87 Difference]: Start difference. First operand 3921 states and 6786 transitions. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:45,595 INFO L93 Difference]: Finished difference Result 11272 states and 19663 transitions. [2024-10-11 04:12:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:45,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1656 [2024-10-11 04:12:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:45,609 INFO L225 Difference]: With dead ends: 11272 [2024-10-11 04:12:45,610 INFO L226 Difference]: Without dead ends: 7353 [2024-10-11 04:12:45,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:45,617 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 2704 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 2374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 6849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2374 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:45,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 1694 Invalid, 6849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2374 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-10-11 04:12:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2024-10-11 04:12:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351. [2024-10-11 04:12:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7350 states have (on average 1.5522448979591836) internal successors, (11409), 7350 states have internal predecessors, (11409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 11409 transitions. [2024-10-11 04:12:45,719 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 11409 transitions. Word has length 1656 [2024-10-11 04:12:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:45,720 INFO L471 AbstractCegarLoop]: Abstraction has 7351 states and 11409 transitions. [2024-10-11 04:12:45,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 11409 transitions. [2024-10-11 04:12:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2024-10-11 04:12:45,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:45,748 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:45,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 04:12:45,748 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:45,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:45,749 INFO L85 PathProgramCache]: Analyzing trace with hash -201097838, now seen corresponding path program 1 times [2024-10-11 04:12:45,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929016988] [2024-10-11 04:12:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929016988] [2024-10-11 04:12:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929016988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:47,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:12:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394773340] [2024-10-11 04:12:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:47,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:47,320 INFO L87 Difference]: Start difference. First operand 7351 states and 11409 transitions. Second operand has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:52,460 INFO L93 Difference]: Finished difference Result 21534 states and 33516 transitions. [2024-10-11 04:12:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:52,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1674 [2024-10-11 04:12:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:52,495 INFO L225 Difference]: With dead ends: 21534 [2024-10-11 04:12:52,495 INFO L226 Difference]: Without dead ends: 14185 [2024-10-11 04:12:52,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:52,511 INFO L432 NwaCegarLoop]: 3607 mSDtfsCounter, 2170 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 4762 mSolverCounterSat, 2214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 6976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2214 IncrementalHoareTripleChecker+Valid, 4762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:52,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 3852 Invalid, 6976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2214 Valid, 4762 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-10-11 04:12:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14185 states. [2024-10-11 04:12:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14185 to 14180. [2024-10-11 04:12:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14180 states, 14179 states have (on average 1.3787996332604555) internal successors, (19550), 14179 states have internal predecessors, (19550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14180 states to 14180 states and 19550 transitions. [2024-10-11 04:12:52,718 INFO L78 Accepts]: Start accepts. Automaton has 14180 states and 19550 transitions. Word has length 1674 [2024-10-11 04:12:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:52,718 INFO L471 AbstractCegarLoop]: Abstraction has 14180 states and 19550 transitions. [2024-10-11 04:12:52,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 14180 states and 19550 transitions. [2024-10-11 04:12:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1692 [2024-10-11 04:12:52,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:52,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:52,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 04:12:52,758 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:52,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2065392487, now seen corresponding path program 1 times [2024-10-11 04:12:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:52,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771808578] [2024-10-11 04:12:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:52,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:12:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:12:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:12:54,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:12:54,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771808578] [2024-10-11 04:12:54,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771808578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:12:54,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:12:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:12:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818627860] [2024-10-11 04:12:54,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:12:54,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:12:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:12:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:12:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:54,028 INFO L87 Difference]: Start difference. First operand 14180 states and 19550 transitions. Second operand has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:12:59,511 INFO L93 Difference]: Finished difference Result 41938 states and 57853 transitions. [2024-10-11 04:12:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:12:59,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1691 [2024-10-11 04:12:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:12:59,549 INFO L225 Difference]: With dead ends: 41938 [2024-10-11 04:12:59,549 INFO L226 Difference]: Without dead ends: 27760 [2024-10-11 04:12:59,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:12:59,556 INFO L432 NwaCegarLoop]: 1079 mSDtfsCounter, 3145 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4774 mSolverCounterSat, 2129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3145 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 6903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2129 IncrementalHoareTripleChecker+Valid, 4774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:12:59,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3145 Valid, 1166 Invalid, 6903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2129 Valid, 4774 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-10-11 04:12:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27760 states. [2024-10-11 04:12:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27760 to 27760. [2024-10-11 04:12:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27760 states, 27759 states have (on average 1.3257682193162579) internal successors, (36802), 27759 states have internal predecessors, (36802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27760 states to 27760 states and 36802 transitions. [2024-10-11 04:12:59,927 INFO L78 Accepts]: Start accepts. Automaton has 27760 states and 36802 transitions. Word has length 1691 [2024-10-11 04:12:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:12:59,928 INFO L471 AbstractCegarLoop]: Abstraction has 27760 states and 36802 transitions. [2024-10-11 04:12:59,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:12:59,929 INFO L276 IsEmpty]: Start isEmpty. Operand 27760 states and 36802 transitions. [2024-10-11 04:12:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2024-10-11 04:12:59,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:12:59,973 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:12:59,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 04:12:59,973 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:12:59,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:12:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash 995473349, now seen corresponding path program 1 times [2024-10-11 04:12:59,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:12:59,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055078230] [2024-10-11 04:12:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:12:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:13:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:13:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:13:01,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:13:01,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055078230] [2024-10-11 04:13:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055078230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:13:01,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:13:01,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:13:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022118785] [2024-10-11 04:13:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:13:01,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:13:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:13:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:13:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:13:01,423 INFO L87 Difference]: Start difference. First operand 27760 states and 36802 transitions. Second operand has 3 states, 3 states have (on average 583.3333333333334) internal successors, (1750), 2 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)