./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 738a2e75c3974a334a4730af8ad8a1bca696e22b6aef9e5670f827b7767c7884 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:31:09,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:31:09,341 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:31:09,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:31:09,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:31:09,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:31:09,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:31:09,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:31:09,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:31:09,381 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:31:09,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:31:09,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:31:09,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:31:09,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:31:09,384 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:31:09,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:31:09,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:31:09,387 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:31:09,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:31:09,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:31:09,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:31:09,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:31:09,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:31:09,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:31:09,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:31:09,392 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:31:09,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:31:09,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:31:09,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:31:09,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:31:09,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:31:09,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:31:09,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:31:09,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:31:09,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:31:09,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:31:09,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:31:09,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:31:09,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:31:09,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:31:09,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:31:09,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:31:09,398 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 738a2e75c3974a334a4730af8ad8a1bca696e22b6aef9e5670f827b7767c7884 [2024-11-18 15:31:09,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:31:09,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:31:09,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:31:09,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:31:09,680 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:31:09,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c [2024-11-18 15:31:11,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:31:11,899 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:31:11,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.01.cil-1.c [2024-11-18 15:31:11,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6eb836bb/530efcf253b44e8c934b38918e029562/FLAGb2ff3b6e9 [2024-11-18 15:31:12,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6eb836bb/530efcf253b44e8c934b38918e029562 [2024-11-18 15:31:12,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:31:12,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:31:12,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:31:12,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:31:12,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:31:12,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:31:12" (1/1) ... [2024-11-18 15:31:12,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f563736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:12, skipping insertion in model container [2024-11-18 15:31:12,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:31:12" (1/1) ... [2024-11-18 15:31:12,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:31:14,314 WARN L250 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] [2024-11-18 15:31:14,340 WARN L250 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] [2024-11-18 15:31:14,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:31:14,461 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:31:15,115 WARN L250 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] [2024-11-18 15:31:15,121 WARN L250 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] [2024-11-18 15:31:15,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:31:15,168 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:31:15,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15 WrapperNode [2024-11-18 15:31:15,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:31:15,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:31:15,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:31:15,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:31:15,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:15,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:15,597 INFO L138 Inliner]: procedures = 46, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12573 [2024-11-18 15:31:15,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:31:15,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:31:15,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:31:15,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:31:15,607 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:15,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:15,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,060 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:31:16,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:31:16,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:31:16,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:31:16,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:31:16,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (1/1) ... [2024-11-18 15:31:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:31:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:16,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:31:16,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:31:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:31:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:31:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:31:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:31:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:31:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:31:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:31:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:31:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:31:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:31:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:31:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:31:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:31:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:31:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:31:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:31:16,635 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:31:16,638 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:31:24,263 INFO L? ?]: Removed 1689 outVars from TransFormulas that were not future-live. [2024-11-18 15:31:24,263 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:31:24,317 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:31:24,318 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 15:31:24,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:31:24 BoogieIcfgContainer [2024-11-18 15:31:24,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:31:24,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:31:24,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:31:24,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:31:24,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:31:12" (1/3) ... [2024-11-18 15:31:24,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283ddd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:31:24, skipping insertion in model container [2024-11-18 15:31:24,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:15" (2/3) ... [2024-11-18 15:31:24,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283ddd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:31:24, skipping insertion in model container [2024-11-18 15:31:24,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:31:24" (3/3) ... [2024-11-18 15:31:24,326 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.01.cil-1.c [2024-11-18 15:31:24,342 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:31:24,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:31:24,452 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:31:24,471 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;@6b120c22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:31:24,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:31:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 2292 states, 2268 states have (on average 1.8580246913580247) internal successors, (4214), 2271 states have internal predecessors, (4214), 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) [2024-11-18 15:31:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 15:31:24,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:24,500 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] [2024-11-18 15:31:24,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:24,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash -933589418, now seen corresponding path program 1 times [2024-11-18 15:31:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256208504] [2024-11-18 15:31:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256208504] [2024-11-18 15:31:24,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256208504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:24,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:24,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:31:24,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226341285] [2024-11-18 15:31:24,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:24,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:31:24,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:31:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:31:24,954 INFO L87 Difference]: Start difference. First operand has 2292 states, 2268 states have (on average 1.8580246913580247) internal successors, (4214), 2271 states have internal predecessors, (4214), 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 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:25,479 INFO L93 Difference]: Finished difference Result 4677 states and 8629 transitions. [2024-11-18 15:31:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:31:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-18 15:31:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:25,506 INFO L225 Difference]: With dead ends: 4677 [2024-11-18 15:31:25,506 INFO L226 Difference]: Without dead ends: 2324 [2024-11-18 15:31:25,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:25,520 INFO L432 NwaCegarLoop]: 4140 mSDtfsCounter, 4243 mSDsluCounter, 8323 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 12463 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:25,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 12463 Invalid, 215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:31:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2024-11-18 15:31:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2317. [2024-11-18 15:31:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2277 states have (on average 1.8361879666227492) internal successors, (4181), 2280 states have internal predecessors, (4181), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2024-11-18 15:31:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 4232 transitions. [2024-11-18 15:31:25,678 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 4232 transitions. Word has length 57 [2024-11-18 15:31:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:25,678 INFO L471 AbstractCegarLoop]: Abstraction has 2317 states and 4232 transitions. [2024-11-18 15:31:25,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 4232 transitions. [2024-11-18 15:31:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 15:31:25,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:25,682 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] [2024-11-18 15:31:25,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:31:25,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:25,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1845541414, now seen corresponding path program 1 times [2024-11-18 15:31:25,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:25,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54696044] [2024-11-18 15:31:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:25,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:25,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:25,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54696044] [2024-11-18 15:31:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54696044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:25,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:25,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924714477] [2024-11-18 15:31:25,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:25,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:25,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:25,877 INFO L87 Difference]: Start difference. First operand 2317 states and 4232 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:26,311 INFO L93 Difference]: Finished difference Result 2614 states and 4649 transitions. [2024-11-18 15:31:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-18 15:31:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:26,323 INFO L225 Difference]: With dead ends: 2614 [2024-11-18 15:31:26,324 INFO L226 Difference]: Without dead ends: 2427 [2024-11-18 15:31:26,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:26,326 INFO L432 NwaCegarLoop]: 4136 mSDtfsCounter, 4164 mSDsluCounter, 12367 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 16503 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:26,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 16503 Invalid, 377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:31:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2024-11-18 15:31:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2404. [2024-11-18 15:31:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2347 states have (on average 1.8227524499360885) internal successors, (4278), 2351 states have internal predecessors, (4278), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-18 15:31:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4352 transitions. [2024-11-18 15:31:26,388 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4352 transitions. Word has length 57 [2024-11-18 15:31:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:26,389 INFO L471 AbstractCegarLoop]: Abstraction has 2404 states and 4352 transitions. [2024-11-18 15:31:26,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4352 transitions. [2024-11-18 15:31:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 15:31:26,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:26,391 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] [2024-11-18 15:31:26,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:31:26,391 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:26,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:26,392 INFO L85 PathProgramCache]: Analyzing trace with hash 400038040, now seen corresponding path program 1 times [2024-11-18 15:31:26,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:26,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982878532] [2024-11-18 15:31:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:26,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:26,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982878532] [2024-11-18 15:31:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982878532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:26,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:26,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518159353] [2024-11-18 15:31:26,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:26,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:26,508 INFO L87 Difference]: Start difference. First operand 2404 states and 4352 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:26,915 INFO L93 Difference]: Finished difference Result 2903 states and 5049 transitions. [2024-11-18 15:31:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:26,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-18 15:31:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:26,927 INFO L225 Difference]: With dead ends: 2903 [2024-11-18 15:31:26,928 INFO L226 Difference]: Without dead ends: 2629 [2024-11-18 15:31:26,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:26,931 INFO L432 NwaCegarLoop]: 4130 mSDtfsCounter, 4203 mSDsluCounter, 12344 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 16474 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:26,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4214 Valid, 16474 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:31:26,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2024-11-18 15:31:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2577. [2024-11-18 15:31:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2486 states have (on average 1.7984714400643604) internal successors, (4471), 2494 states have internal predecessors, (4471), 53 states have call successors, (53), 30 states have call predecessors, (53), 36 states have return successors, (69), 56 states have call predecessors, (69), 53 states have call successors, (69) [2024-11-18 15:31:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4593 transitions. [2024-11-18 15:31:27,002 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4593 transitions. Word has length 57 [2024-11-18 15:31:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:27,002 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4593 transitions. [2024-11-18 15:31:27,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4593 transitions. [2024-11-18 15:31:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 15:31:27,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:27,004 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] [2024-11-18 15:31:27,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:31:27,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:27,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -497355238, now seen corresponding path program 1 times [2024-11-18 15:31:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541413026] [2024-11-18 15:31:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:27,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:27,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:27,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541413026] [2024-11-18 15:31:27,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541413026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:27,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:27,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:27,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526493142] [2024-11-18 15:31:27,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:27,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:27,093 INFO L87 Difference]: Start difference. First operand 2577 states and 4593 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:27,645 INFO L93 Difference]: Finished difference Result 3412 states and 5768 transitions. [2024-11-18 15:31:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-18 15:31:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:27,659 INFO L225 Difference]: With dead ends: 3412 [2024-11-18 15:31:27,659 INFO L226 Difference]: Without dead ends: 2965 [2024-11-18 15:31:27,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:27,662 INFO L432 NwaCegarLoop]: 4124 mSDtfsCounter, 4156 mSDsluCounter, 12334 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4164 SdHoareTripleChecker+Valid, 16458 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:27,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4164 Valid, 16458 Invalid, 402 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [24 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:31:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2024-11-18 15:31:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2900. [2024-11-18 15:31:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2741 states have (on average 1.7573878146661803) internal successors, (4817), 2763 states have internal predecessors, (4817), 85 states have call successors, (85), 52 states have call predecessors, (85), 72 states have return successors, (149), 92 states have call predecessors, (149), 85 states have call successors, (149) [2024-11-18 15:31:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 5051 transitions. [2024-11-18 15:31:27,765 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 5051 transitions. Word has length 57 [2024-11-18 15:31:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:27,765 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 5051 transitions. [2024-11-18 15:31:27,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 5051 transitions. [2024-11-18 15:31:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 15:31:27,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:27,768 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] [2024-11-18 15:31:27,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:31:27,768 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:27,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash -249208744, now seen corresponding path program 1 times [2024-11-18 15:31:27,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:27,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859982184] [2024-11-18 15:31:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:27,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859982184] [2024-11-18 15:31:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859982184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:27,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:27,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:31:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899684623] [2024-11-18 15:31:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:27,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:31:27,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:27,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:31:27,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:31:27,816 INFO L87 Difference]: Start difference. First operand 2900 states and 5051 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:28,004 INFO L93 Difference]: Finished difference Result 4106 states and 6772 transitions. [2024-11-18 15:31:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:31:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-11-18 15:31:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:28,020 INFO L225 Difference]: With dead ends: 4106 [2024-11-18 15:31:28,021 INFO L226 Difference]: Without dead ends: 3337 [2024-11-18 15:31:28,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:31:28,026 INFO L432 NwaCegarLoop]: 4215 mSDtfsCounter, 4196 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:28,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 8375 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:31:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2024-11-18 15:31:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 3314. [2024-11-18 15:31:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3070 states have (on average 1.7078175895765473) internal successors, (5243), 3103 states have internal predecessors, (5243), 134 states have call successors, (134), 82 states have call predecessors, (134), 108 states have return successors, (211), 136 states have call predecessors, (211), 134 states have call successors, (211) [2024-11-18 15:31:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5588 transitions. [2024-11-18 15:31:28,145 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5588 transitions. Word has length 57 [2024-11-18 15:31:28,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:28,146 INFO L471 AbstractCegarLoop]: Abstraction has 3314 states and 5588 transitions. [2024-11-18 15:31:28,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5588 transitions. [2024-11-18 15:31:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 15:31:28,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:28,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:28,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:31:28,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:28,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:28,151 INFO L85 PathProgramCache]: Analyzing trace with hash -511188062, now seen corresponding path program 1 times [2024-11-18 15:31:28,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:28,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571287274] [2024-11-18 15:31:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:28,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:31:28,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571287274] [2024-11-18 15:31:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571287274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091738744] [2024-11-18 15:31:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:28,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:28,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:28,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:31:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:28,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:31:28,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 15:31:28,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:28,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091738744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:28,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:28,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:31:28,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234231262] [2024-11-18 15:31:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:28,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:28,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:28,387 INFO L87 Difference]: Start difference. First operand 3314 states and 5588 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-18 15:31:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:28,521 INFO L93 Difference]: Finished difference Result 5586 states and 8766 transitions. [2024-11-18 15:31:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 93 [2024-11-18 15:31:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:28,544 INFO L225 Difference]: With dead ends: 5586 [2024-11-18 15:31:28,545 INFO L226 Difference]: Without dead ends: 4404 [2024-11-18 15:31:28,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:28,553 INFO L432 NwaCegarLoop]: 4219 mSDtfsCounter, 115 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 8315 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:28,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 8315 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2024-11-18 15:31:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 4404. [2024-11-18 15:31:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 3937 states have (on average 1.6248412496824993) internal successors, (6397), 3997 states have internal predecessors, (6397), 253 states have call successors, (253), 160 states have call predecessors, (253), 212 states have return successors, (440), 262 states have call predecessors, (440), 253 states have call successors, (440) [2024-11-18 15:31:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 7090 transitions. [2024-11-18 15:31:28,913 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 7090 transitions. Word has length 93 [2024-11-18 15:31:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:28,913 INFO L471 AbstractCegarLoop]: Abstraction has 4404 states and 7090 transitions. [2024-11-18 15:31:28,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-18 15:31:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 7090 transitions. [2024-11-18 15:31:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 15:31:28,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:28,925 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:28,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:31:29,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 15:31:29,127 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:29,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1537753171, now seen corresponding path program 1 times [2024-11-18 15:31:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:29,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516421457] [2024-11-18 15:31:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 15:31:29,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:29,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516421457] [2024-11-18 15:31:29,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516421457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:29,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528566011] [2024-11-18 15:31:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:29,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:29,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:29,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:31:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:29,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:31:29,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 15:31:29,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528566011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:31:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751929553] [2024-11-18 15:31:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:29,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:29,477 INFO L87 Difference]: Start difference. First operand 4404 states and 7090 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (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) [2024-11-18 15:31:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:29,806 INFO L93 Difference]: Finished difference Result 8806 states and 13167 transitions. [2024-11-18 15:31:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (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 120 [2024-11-18 15:31:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:29,856 INFO L225 Difference]: With dead ends: 8806 [2024-11-18 15:31:29,856 INFO L226 Difference]: Without dead ends: 6537 [2024-11-18 15:31:29,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:29,875 INFO L432 NwaCegarLoop]: 4104 mSDtfsCounter, 4026 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:29,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4026 Valid, 4225 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6537 states. [2024-11-18 15:31:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6537 to 6479. [2024-11-18 15:31:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6479 states, 5590 states have (on average 1.535778175313059) internal successors, (8585), 5707 states have internal predecessors, (8585), 473 states have call successors, (473), 310 states have call predecessors, (473), 414 states have return successors, (816), 477 states have call predecessors, (816), 473 states have call successors, (816) [2024-11-18 15:31:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6479 states to 6479 states and 9874 transitions. [2024-11-18 15:31:30,281 INFO L78 Accepts]: Start accepts. Automaton has 6479 states and 9874 transitions. Word has length 120 [2024-11-18 15:31:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:30,283 INFO L471 AbstractCegarLoop]: Abstraction has 6479 states and 9874 transitions. [2024-11-18 15:31:30,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (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) [2024-11-18 15:31:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6479 states and 9874 transitions. [2024-11-18 15:31:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 15:31:30,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:30,295 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 15:31:30,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:31:30,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-18 15:31:30,500 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:30,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash -782048242, now seen corresponding path program 1 times [2024-11-18 15:31:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:30,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041846702] [2024-11-18 15:31:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 15:31:30,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:30,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041846702] [2024-11-18 15:31:30,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041846702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548350522] [2024-11-18 15:31:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:30,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:30,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:31:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:30,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:31:30,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 15:31:30,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548350522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:30,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:30,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:31:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234856737] [2024-11-18 15:31:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:30,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:30,745 INFO L87 Difference]: Start difference. First operand 6479 states and 9874 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-18 15:31:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:31,033 INFO L93 Difference]: Finished difference Result 9829 states and 14417 transitions. [2024-11-18 15:31:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:31,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 137 [2024-11-18 15:31:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:31,071 INFO L225 Difference]: With dead ends: 9829 [2024-11-18 15:31:31,071 INFO L226 Difference]: Without dead ends: 6807 [2024-11-18 15:31:31,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:31,085 INFO L432 NwaCegarLoop]: 4124 mSDtfsCounter, 4059 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:31,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4059 Valid, 4253 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2024-11-18 15:31:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6769. [2024-11-18 15:31:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6769 states, 5848 states have (on average 1.5097469220246238) internal successors, (8829), 5965 states have internal predecessors, (8829), 479 states have call successors, (479), 336 states have call predecessors, (479), 440 states have return successors, (848), 483 states have call predecessors, (848), 479 states have call successors, (848) [2024-11-18 15:31:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10156 transitions. [2024-11-18 15:31:31,467 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10156 transitions. Word has length 137 [2024-11-18 15:31:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:31,468 INFO L471 AbstractCegarLoop]: Abstraction has 6769 states and 10156 transitions. [2024-11-18 15:31:31,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-18 15:31:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10156 transitions. [2024-11-18 15:31:31,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 15:31:31,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:31,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:31,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:31:31,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:31,688 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:31,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1599308267, now seen corresponding path program 1 times [2024-11-18 15:31:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121928245] [2024-11-18 15:31:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 15:31:31,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121928245] [2024-11-18 15:31:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121928245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502867376] [2024-11-18 15:31:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:31,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:31,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:31,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:31:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:31,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:31:31,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:31:31,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502867376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:31,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:31:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085392665] [2024-11-18 15:31:31,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:31,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:31,914 INFO L87 Difference]: Start difference. First operand 6769 states and 10156 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-18 15:31:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:32,408 INFO L93 Difference]: Finished difference Result 15677 states and 22206 transitions. [2024-11-18 15:31:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:32,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 138 [2024-11-18 15:31:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:32,457 INFO L225 Difference]: With dead ends: 15677 [2024-11-18 15:31:32,457 INFO L226 Difference]: Without dead ends: 11045 [2024-11-18 15:31:32,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:32,476 INFO L432 NwaCegarLoop]: 4217 mSDtfsCounter, 114 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:32,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 8314 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11045 states. [2024-11-18 15:31:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11045 to 11031. [2024-11-18 15:31:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11031 states, 9240 states have (on average 1.4217532467532468) internal successors, (13137), 9473 states have internal predecessors, (13137), 925 states have call successors, (925), 656 states have call predecessors, (925), 864 states have return successors, (1806), 933 states have call predecessors, (1806), 925 states have call successors, (1806) [2024-11-18 15:31:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 15868 transitions. [2024-11-18 15:31:33,230 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 15868 transitions. Word has length 138 [2024-11-18 15:31:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:33,231 INFO L471 AbstractCegarLoop]: Abstraction has 11031 states and 15868 transitions. [2024-11-18 15:31:33,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-18 15:31:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 15868 transitions. [2024-11-18 15:31:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 15:31:33,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:33,256 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 15:31:33,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:31:33,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:33,458 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:33,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash 657886781, now seen corresponding path program 1 times [2024-11-18 15:31:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:33,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140997608] [2024-11-18 15:31:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 15:31:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140997608] [2024-11-18 15:31:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140997608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59164398] [2024-11-18 15:31:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:33,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:33,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:33,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:31:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:33,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:31:33,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 15:31:33,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:33,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59164398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:33,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:33,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:31:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602410030] [2024-11-18 15:31:33,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:33,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:33,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:33,693 INFO L87 Difference]: Start difference. First operand 11031 states and 15868 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-18 15:31:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:34,329 INFO L93 Difference]: Finished difference Result 15651 states and 22368 transitions. [2024-11-18 15:31:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:34,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 139 [2024-11-18 15:31:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:34,392 INFO L225 Difference]: With dead ends: 15651 [2024-11-18 15:31:34,393 INFO L226 Difference]: Without dead ends: 11065 [2024-11-18 15:31:34,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:34,414 INFO L432 NwaCegarLoop]: 4183 mSDtfsCounter, 99 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:34,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 8271 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2024-11-18 15:31:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 11007. [2024-11-18 15:31:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11007 states, 9216 states have (on average 1.4085286458333333) internal successors, (12981), 9449 states have internal predecessors, (12981), 925 states have call successors, (925), 656 states have call predecessors, (925), 864 states have return successors, (1806), 933 states have call predecessors, (1806), 925 states have call successors, (1806) [2024-11-18 15:31:35,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11007 states to 11007 states and 15712 transitions. [2024-11-18 15:31:35,157 INFO L78 Accepts]: Start accepts. Automaton has 11007 states and 15712 transitions. Word has length 139 [2024-11-18 15:31:35,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:35,157 INFO L471 AbstractCegarLoop]: Abstraction has 11007 states and 15712 transitions. [2024-11-18 15:31:35,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-18 15:31:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11007 states and 15712 transitions. [2024-11-18 15:31:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 15:31:35,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:35,180 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:35,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 15:31:35,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 15:31:35,381 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:35,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1557277189, now seen corresponding path program 1 times [2024-11-18 15:31:35,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:35,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656207479] [2024-11-18 15:31:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 15:31:35,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656207479] [2024-11-18 15:31:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656207479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359443024] [2024-11-18 15:31:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:35,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:35,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 15:31:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:35,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:31:35,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 15:31:35,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359443024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:35,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:35,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:31:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380036919] [2024-11-18 15:31:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:35,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:35,607 INFO L87 Difference]: Start difference. First operand 11007 states and 15712 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-18 15:31:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:36,066 INFO L93 Difference]: Finished difference Result 17477 states and 24560 transitions. [2024-11-18 15:31:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 139 [2024-11-18 15:31:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:36,112 INFO L225 Difference]: With dead ends: 17477 [2024-11-18 15:31:36,112 INFO L226 Difference]: Without dead ends: 9667 [2024-11-18 15:31:36,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:36,140 INFO L432 NwaCegarLoop]: 4101 mSDtfsCounter, 4077 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:36,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4125 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:36,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9667 states. [2024-11-18 15:31:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9667 to 9235. [2024-11-18 15:31:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9235 states, 7850 states have (on average 1.395031847133758) internal successors, (10951), 7971 states have internal predecessors, (10951), 753 states have call successors, (753), 534 states have call predecessors, (753), 630 states have return successors, (1162), 745 states have call predecessors, (1162), 753 states have call successors, (1162) [2024-11-18 15:31:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9235 states to 9235 states and 12866 transitions. [2024-11-18 15:31:36,650 INFO L78 Accepts]: Start accepts. Automaton has 9235 states and 12866 transitions. Word has length 139 [2024-11-18 15:31:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:36,651 INFO L471 AbstractCegarLoop]: Abstraction has 9235 states and 12866 transitions. [2024-11-18 15:31:36,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-18 15:31:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9235 states and 12866 transitions. [2024-11-18 15:31:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 15:31:36,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:36,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:36,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 15:31:36,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:36,865 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:36,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash -594645104, now seen corresponding path program 1 times [2024-11-18 15:31:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:36,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469116892] [2024-11-18 15:31:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 15:31:36,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469116892] [2024-11-18 15:31:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469116892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186200781] [2024-11-18 15:31:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:36,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:36,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 15:31:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:37,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 15:31:37,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-18 15:31:37,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186200781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:37,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-18 15:31:37,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146305868] [2024-11-18 15:31:37,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:37,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:31:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:31:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:31:37,121 INFO L87 Difference]: Start difference. First operand 9235 states and 12866 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-18 15:31:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:37,751 INFO L93 Difference]: Finished difference Result 11973 states and 16431 transitions. [2024-11-18 15:31:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:31:37,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 140 [2024-11-18 15:31:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:37,791 INFO L225 Difference]: With dead ends: 11973 [2024-11-18 15:31:37,792 INFO L226 Difference]: Without dead ends: 7339 [2024-11-18 15:31:37,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:37,808 INFO L432 NwaCegarLoop]: 4048 mSDtfsCounter, 4095 mSDsluCounter, 8055 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 12103 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:37,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4103 Valid, 12103 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:31:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2024-11-18 15:31:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 7315. [2024-11-18 15:31:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 6320 states have (on average 1.417879746835443) internal successors, (8961), 6373 states have internal predecessors, (8961), 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) [2024-11-18 15:31:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 10292 transitions. [2024-11-18 15:31:38,217 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 10292 transitions. Word has length 140 [2024-11-18 15:31:38,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:38,218 INFO L471 AbstractCegarLoop]: Abstraction has 7315 states and 10292 transitions. [2024-11-18 15:31:38,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-18 15:31:38,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 10292 transitions. [2024-11-18 15:31:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 15:31:38,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:38,227 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:38,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 15:31:38,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:38,428 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:38,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash -476203630, now seen corresponding path program 1 times [2024-11-18 15:31:38,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:38,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7754475] [2024-11-18 15:31:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 15:31:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7754475] [2024-11-18 15:31:38,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7754475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330257646] [2024-11-18 15:31:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:38,510 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:38,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 15:31:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:38,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 15:31:38,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-18 15:31:38,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:38,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330257646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:38,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:38,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-18 15:31:38,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505310651] [2024-11-18 15:31:38,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:38,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:31:38,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:38,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:31:38,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:31:38,691 INFO L87 Difference]: Start difference. First operand 7315 states and 10292 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-18 15:31:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:39,342 INFO L93 Difference]: Finished difference Result 11545 states and 15660 transitions. [2024-11-18 15:31:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:31:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 140 [2024-11-18 15:31:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:39,379 INFO L225 Difference]: With dead ends: 11545 [2024-11-18 15:31:39,380 INFO L226 Difference]: Without dead ends: 6953 [2024-11-18 15:31:39,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 15:31:39,399 INFO L432 NwaCegarLoop]: 4046 mSDtfsCounter, 4133 mSDsluCounter, 8050 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 12096 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:39,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 12096 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:31:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2024-11-18 15:31:39,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 5221. [2024-11-18 15:31:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 4646 states have (on average 1.4752475247524752) internal successors, (6854), 4675 states have internal predecessors, (6854), 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) [2024-11-18 15:31:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 7622 transitions. [2024-11-18 15:31:39,765 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 7622 transitions. Word has length 140 [2024-11-18 15:31:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:39,766 INFO L471 AbstractCegarLoop]: Abstraction has 5221 states and 7622 transitions. [2024-11-18 15:31:39,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-18 15:31:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 7622 transitions. [2024-11-18 15:31:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 15:31:39,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:39,772 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:39,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 15:31:39,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 15:31:39,973 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:39,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 913090384, now seen corresponding path program 1 times [2024-11-18 15:31:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131809034] [2024-11-18 15:31:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 15:31:40,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131809034] [2024-11-18 15:31:40,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131809034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:40,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401971075] [2024-11-18 15:31:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:40,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:40,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 15:31:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:40,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:31:40,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 15:31:40,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:31:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 15:31:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401971075] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:40,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 15:31:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-18 15:31:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907414632] [2024-11-18 15:31:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:40,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:31:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:31:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:31:40,387 INFO L87 Difference]: Start difference. First operand 5221 states and 7622 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:31:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:40,871 INFO L93 Difference]: Finished difference Result 9141 states and 12226 transitions. [2024-11-18 15:31:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:31:40,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 140 [2024-11-18 15:31:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:40,906 INFO L225 Difference]: With dead ends: 9141 [2024-11-18 15:31:40,906 INFO L226 Difference]: Without dead ends: 7687 [2024-11-18 15:31:40,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:31:40,916 INFO L432 NwaCegarLoop]: 4194 mSDtfsCounter, 4171 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4171 SdHoareTripleChecker+Valid, 8342 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:40,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4171 Valid, 8342 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:31:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7687 states. [2024-11-18 15:31:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7687 to 6388. [2024-11-18 15:31:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 5605 states have (on average 1.4174843889384479) internal successors, (7945), 5638 states have internal predecessors, (7945), 449 states have call successors, (449), 308 states have call predecessors, (449), 332 states have return successors, (597), 445 states have call predecessors, (597), 449 states have call successors, (597) [2024-11-18 15:31:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 8991 transitions. [2024-11-18 15:31:41,248 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 8991 transitions. Word has length 140 [2024-11-18 15:31:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:41,248 INFO L471 AbstractCegarLoop]: Abstraction has 6388 states and 8991 transitions. [2024-11-18 15:31:41,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:31:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 8991 transitions. [2024-11-18 15:31:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 15:31:41,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:41,254 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:41,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 15:31:41,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 15:31:41,455 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:41,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -808605620, now seen corresponding path program 1 times [2024-11-18 15:31:41,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:41,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756251380] [2024-11-18 15:31:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:41,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 15:31:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756251380] [2024-11-18 15:31:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756251380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457474298] [2024-11-18 15:31:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:41,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:41,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:41,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:41,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 15:31:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:41,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:31:41,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 15:31:41,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457474298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:41,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:41,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:31:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444918175] [2024-11-18 15:31:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:41,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:41,662 INFO L87 Difference]: Start difference. First operand 6388 states and 8991 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:31:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:41,881 INFO L93 Difference]: Finished difference Result 10015 states and 13286 transitions. [2024-11-18 15:31:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:41,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 160 [2024-11-18 15:31:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:41,903 INFO L225 Difference]: With dead ends: 10015 [2024-11-18 15:31:41,903 INFO L226 Difference]: Without dead ends: 6477 [2024-11-18 15:31:41,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:41,916 INFO L432 NwaCegarLoop]: 4111 mSDtfsCounter, 4072 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4072 SdHoareTripleChecker+Valid, 4229 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:41,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4072 Valid, 4229 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2024-11-18 15:31:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 6388. [2024-11-18 15:31:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 5605 states have (on average 1.4105263157894736) internal successors, (7906), 5638 states have internal predecessors, (7906), 449 states have call successors, (449), 308 states have call predecessors, (449), 332 states have return successors, (597), 445 states have call predecessors, (597), 449 states have call successors, (597) [2024-11-18 15:31:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 8952 transitions. [2024-11-18 15:31:42,295 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 8952 transitions. Word has length 160 [2024-11-18 15:31:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:42,295 INFO L471 AbstractCegarLoop]: Abstraction has 6388 states and 8952 transitions. [2024-11-18 15:31:42,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:31:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 8952 transitions. [2024-11-18 15:31:42,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 15:31:42,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:42,302 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:42,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 15:31:42,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 15:31:42,507 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:42,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash 211587020, now seen corresponding path program 1 times [2024-11-18 15:31:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998600811] [2024-11-18 15:31:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:42,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 15:31:42,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998600811] [2024-11-18 15:31:42,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998600811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:42,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:42,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:31:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51468550] [2024-11-18 15:31:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:42,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:42,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:42,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:42,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:42,539 INFO L87 Difference]: Start difference. First operand 6388 states and 8952 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 15:31:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:42,711 INFO L93 Difference]: Finished difference Result 9928 states and 13073 transitions. [2024-11-18 15:31:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:42,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 160 [2024-11-18 15:31:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:42,729 INFO L225 Difference]: With dead ends: 9928 [2024-11-18 15:31:42,729 INFO L226 Difference]: Without dead ends: 5675 [2024-11-18 15:31:42,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:42,736 INFO L432 NwaCegarLoop]: 4092 mSDtfsCounter, 129 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 8050 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:42,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 8050 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2024-11-18 15:31:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5675. [2024-11-18 15:31:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5675 states, 5034 states have (on average 1.44259038537942) internal successors, (7262), 5061 states have internal predecessors, (7262), 365 states have call successors, (365), 254 states have call predecessors, (365), 274 states have return successors, (473), 361 states have call predecessors, (473), 365 states have call successors, (473) [2024-11-18 15:31:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 8100 transitions. [2024-11-18 15:31:42,927 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 8100 transitions. Word has length 160 [2024-11-18 15:31:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:42,927 INFO L471 AbstractCegarLoop]: Abstraction has 5675 states and 8100 transitions. [2024-11-18 15:31:42,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 15:31:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 8100 transitions. [2024-11-18 15:31:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 15:31:42,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:42,932 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:42,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 15:31:42,932 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:42,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1011605991, now seen corresponding path program 1 times [2024-11-18 15:31:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828686223] [2024-11-18 15:31:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 15:31:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828686223] [2024-11-18 15:31:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828686223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605094571] [2024-11-18 15:31:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:42,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:42,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:42,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:42,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 15:31:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:43,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:31:43,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 15:31:43,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605094571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:43,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-18 15:31:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476362622] [2024-11-18 15:31:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:43,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:43,097 INFO L87 Difference]: Start difference. First operand 5675 states and 8100 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 15:31:43,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:43,299 INFO L93 Difference]: Finished difference Result 8142 states and 10963 transitions. [2024-11-18 15:31:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:31:43,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 162 [2024-11-18 15:31:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:43,319 INFO L225 Difference]: With dead ends: 8142 [2024-11-18 15:31:43,319 INFO L226 Difference]: Without dead ends: 4604 [2024-11-18 15:31:43,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:43,327 INFO L432 NwaCegarLoop]: 4090 mSDtfsCounter, 0 mSDsluCounter, 16351 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20441 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:43,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20441 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2024-11-18 15:31:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4570. [2024-11-18 15:31:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 4173 states have (on average 1.5015576323987538) internal successors, (6266), 4182 states have internal predecessors, (6266), 217 states have call successors, (217), 151 states have call predecessors, (217), 178 states have return successors, (297), 236 states have call predecessors, (297), 217 states have call successors, (297) [2024-11-18 15:31:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 6780 transitions. [2024-11-18 15:31:43,572 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 6780 transitions. Word has length 162 [2024-11-18 15:31:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:43,573 INFO L471 AbstractCegarLoop]: Abstraction has 4570 states and 6780 transitions. [2024-11-18 15:31:43,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 15:31:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 6780 transitions. [2024-11-18 15:31:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 15:31:43,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:43,578 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:43,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 15:31:43,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 15:31:43,779 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:43,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1707965800, now seen corresponding path program 1 times [2024-11-18 15:31:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171923451] [2024-11-18 15:31:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 15:31:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171923451] [2024-11-18 15:31:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171923451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125245593] [2024-11-18 15:31:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:43,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:43,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:43,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 15:31:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:43,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 15:31:43,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 15:31:43,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125245593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 15:31:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988725666] [2024-11-18 15:31:43,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:43,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:31:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:31:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:31:43,982 INFO L87 Difference]: Start difference. First operand 4570 states and 6780 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:31:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:44,133 INFO L93 Difference]: Finished difference Result 5624 states and 8008 transitions. [2024-11-18 15:31:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:31:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 167 [2024-11-18 15:31:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:44,147 INFO L225 Difference]: With dead ends: 5624 [2024-11-18 15:31:44,148 INFO L226 Difference]: Without dead ends: 3227 [2024-11-18 15:31:44,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:31:44,152 INFO L432 NwaCegarLoop]: 4090 mSDtfsCounter, 0 mSDsluCounter, 12264 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16354 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:44,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16354 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2024-11-18 15:31:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3227. [2024-11-18 15:31:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3040 states have (on average 1.6328947368421052) internal successors, (4964), 3048 states have internal predecessors, (4964), 95 states have call successors, (95), 70 states have call predecessors, (95), 90 states have return successors, (122), 108 states have call predecessors, (122), 95 states have call successors, (122) [2024-11-18 15:31:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5181 transitions. [2024-11-18 15:31:44,284 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5181 transitions. Word has length 167 [2024-11-18 15:31:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:44,284 INFO L471 AbstractCegarLoop]: Abstraction has 3227 states and 5181 transitions. [2024-11-18 15:31:44,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:31:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5181 transitions. [2024-11-18 15:31:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 15:31:44,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:44,287 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:44,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 15:31:44,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 15:31:44,489 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:44,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash -481877974, now seen corresponding path program 1 times [2024-11-18 15:31:44,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:44,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29713871] [2024-11-18 15:31:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:44,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 15:31:44,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29713871] [2024-11-18 15:31:44,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29713871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:31:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207235352] [2024-11-18 15:31:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:44,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:44,558 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:31:44,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 15:31:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:44,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 15:31:44,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:31:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 15:31:44,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:31:44,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207235352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:44,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:31:44,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-18 15:31:44,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934422858] [2024-11-18 15:31:44,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:44,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:31:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:31:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:31:44,674 INFO L87 Difference]: Start difference. First operand 3227 states and 5181 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:31:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:44,813 INFO L93 Difference]: Finished difference Result 3737 states and 5759 transitions. [2024-11-18 15:31:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:31:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 167 [2024-11-18 15:31:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:44,828 INFO L225 Difference]: With dead ends: 3737 [2024-11-18 15:31:44,829 INFO L226 Difference]: Without dead ends: 2123 [2024-11-18 15:31:44,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:31:44,833 INFO L432 NwaCegarLoop]: 4088 mSDtfsCounter, 0 mSDsluCounter, 12258 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16346 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:44,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16346 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2024-11-18 15:31:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2024-11-18 15:31:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2024-11-18 15:31:44,876 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 167 [2024-11-18 15:31:44,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:44,876 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2024-11-18 15:31:44,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 15:31:44,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2024-11-18 15:31:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1647 [2024-11-18 15:31:44,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:44,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:44,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 15:31:45,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:31:45,131 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:45,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -889868883, now seen corresponding path program 1 times [2024-11-18 15:31:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263377798] [2024-11-18 15:31:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:46,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:46,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263377798] [2024-11-18 15:31:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263377798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:46,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:46,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:31:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392201353] [2024-11-18 15:31:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:46,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:46,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:46,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:46,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:46,948 INFO L87 Difference]: Start difference. First operand 2123 states and 3959 transitions. Second operand has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:52,742 INFO L93 Difference]: Finished difference Result 6058 states and 11375 transitions. [2024-11-18 15:31:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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 1646 [2024-11-18 15:31:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:52,776 INFO L225 Difference]: With dead ends: 6058 [2024-11-18 15:31:52,776 INFO L226 Difference]: Without dead ends: 3938 [2024-11-18 15:31:52,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:52,783 INFO L432 NwaCegarLoop]: 1258 mSDtfsCounter, 621 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 2591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 7542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2591 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:52,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1412 Invalid, 7542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2591 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-18 15:31:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2024-11-18 15:31:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3922. [2024-11-18 15:31:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3921 states have (on average 1.7309359857179292) internal successors, (6787), 3921 states have internal predecessors, (6787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6787 transitions. [2024-11-18 15:31:52,908 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6787 transitions. Word has length 1646 [2024-11-18 15:31:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:52,914 INFO L471 AbstractCegarLoop]: Abstraction has 3922 states and 6787 transitions. [2024-11-18 15:31:52,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6787 transitions. [2024-11-18 15:31:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1658 [2024-11-18 15:31:52,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:52,960 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, 1] [2024-11-18 15:31:52,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 15:31:52,960 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:52,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1312568886, now seen corresponding path program 1 times [2024-11-18 15:31:52,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928155283] [2024-11-18 15:31:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928155283] [2024-11-18 15:31:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928155283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:53,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:31:54,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547358336] [2024-11-18 15:31:54,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:54,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:54,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:54,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:54,004 INFO L87 Difference]: Start difference. First operand 3922 states and 6787 transitions. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 2 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:59,118 INFO L93 Difference]: Finished difference Result 11273 states and 19664 transitions. [2024-11-18 15:31:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 2 states have internal predecessors, (1657), 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 1657 [2024-11-18 15:31:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:59,134 INFO L225 Difference]: With dead ends: 11273 [2024-11-18 15:31:59,134 INFO L226 Difference]: Without dead ends: 7354 [2024-11-18 15:31:59,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:59,139 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 2704 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 2374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2374 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:59,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 1696 Invalid, 6848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2374 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-18 15:31:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2024-11-18 15:31:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7352. [2024-11-18 15:31:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 7351 states have (on average 1.5521697728200246) internal successors, (11410), 7351 states have internal predecessors, (11410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 11410 transitions. [2024-11-18 15:31:59,207 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 11410 transitions. Word has length 1657 [2024-11-18 15:31:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:59,208 INFO L471 AbstractCegarLoop]: Abstraction has 7352 states and 11410 transitions. [2024-11-18 15:31:59,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 2 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:31:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 11410 transitions. [2024-11-18 15:31:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2024-11-18 15:31:59,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:59,227 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, 1] [2024-11-18 15:31:59,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 15:31:59,227 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:59,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1123878268, now seen corresponding path program 1 times [2024-11-18 15:31:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138445135] [2024-11-18 15:31:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:00,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138445135] [2024-11-18 15:32:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138445135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:32:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460404968] [2024-11-18 15:32:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:00,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:00,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:00,391 INFO L87 Difference]: Start difference. First operand 7352 states and 11410 transitions. Second operand has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:05,590 INFO L93 Difference]: Finished difference Result 21535 states and 33517 transitions. [2024-11-18 15:32:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:05,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 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 1675 [2024-11-18 15:32:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:05,625 INFO L225 Difference]: With dead ends: 21535 [2024-11-18 15:32:05,625 INFO L226 Difference]: Without dead ends: 14186 [2024-11-18 15:32:05,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:05,639 INFO L432 NwaCegarLoop]: 3609 mSDtfsCounter, 2170 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 4761 mSolverCounterSat, 2214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 6975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2214 IncrementalHoareTripleChecker+Valid, 4761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:05,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 3855 Invalid, 6975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2214 Valid, 4761 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-18 15:32:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14186 states. [2024-11-18 15:32:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14186 to 14181. [2024-11-18 15:32:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14181 states, 14180 states have (on average 1.3787729196050775) internal successors, (19551), 14180 states have internal predecessors, (19551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14181 states to 14181 states and 19551 transitions. [2024-11-18 15:32:05,804 INFO L78 Accepts]: Start accepts. Automaton has 14181 states and 19551 transitions. Word has length 1675 [2024-11-18 15:32:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:05,805 INFO L471 AbstractCegarLoop]: Abstraction has 14181 states and 19551 transitions. [2024-11-18 15:32:05,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 14181 states and 19551 transitions. [2024-11-18 15:32:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2024-11-18 15:32:05,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:05,834 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, 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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, 1, 1, 1] [2024-11-18 15:32:05,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 15:32:05,834 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:05,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2103269905, now seen corresponding path program 1 times [2024-11-18 15:32:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458690441] [2024-11-18 15:32:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:05,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:06,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458690441] [2024-11-18 15:32:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458690441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:06,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:32:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729381776] [2024-11-18 15:32:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:06,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:06,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:06,680 INFO L87 Difference]: Start difference. First operand 14181 states and 19551 transitions. Second operand has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:12,737 INFO L93 Difference]: Finished difference Result 41939 states and 57854 transitions. [2024-11-18 15:32:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 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 1692 [2024-11-18 15:32:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:12,802 INFO L225 Difference]: With dead ends: 41939 [2024-11-18 15:32:12,802 INFO L226 Difference]: Without dead ends: 27761 [2024-11-18 15:32:12,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:12,822 INFO L432 NwaCegarLoop]: 1081 mSDtfsCounter, 3145 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 2129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3145 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 6902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2129 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:12,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3145 Valid, 1168 Invalid, 6902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2129 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-18 15:32:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27761 states. [2024-11-18 15:32:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27761 to 27761. [2024-11-18 15:32:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27761 states, 27760 states have (on average 1.325756484149856) internal successors, (36803), 27760 states have internal predecessors, (36803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27761 states to 27761 states and 36803 transitions. [2024-11-18 15:32:13,094 INFO L78 Accepts]: Start accepts. Automaton has 27761 states and 36803 transitions. Word has length 1692 [2024-11-18 15:32:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:13,095 INFO L471 AbstractCegarLoop]: Abstraction has 27761 states and 36803 transitions. [2024-11-18 15:32:13,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 27761 states and 36803 transitions. [2024-11-18 15:32:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1752 [2024-11-18 15:32:13,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:13,127 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, 1] [2024-11-18 15:32:13,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 15:32:13,128 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:13,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash 910450863, now seen corresponding path program 1 times [2024-11-18 15:32:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:13,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967487557] [2024-11-18 15:32:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:13,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:13,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967487557] [2024-11-18 15:32:13,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967487557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:13,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:32:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107889189] [2024-11-18 15:32:13,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:13,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:13,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:13,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:13,954 INFO L87 Difference]: Start difference. First operand 27761 states and 36803 transitions. Second operand has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 2 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:19,132 INFO L93 Difference]: Finished difference Result 69127 states and 90662 transitions. [2024-11-18 15:32:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 2 states have internal predecessors, (1751), 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 1751 [2024-11-18 15:32:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:19,192 INFO L225 Difference]: With dead ends: 69127 [2024-11-18 15:32:19,193 INFO L226 Difference]: Without dead ends: 41369 [2024-11-18 15:32:19,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:19,223 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 1962 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5812 mSolverCounterSat, 1286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 7098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1286 IncrementalHoareTripleChecker+Valid, 5812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:19,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 1687 Invalid, 7098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1286 Valid, 5812 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-18 15:32:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41369 states. [2024-11-18 15:32:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41369 to 41347. [2024-11-18 15:32:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41347 states, 41346 states have (on average 1.2133700962608234) internal successors, (50168), 41346 states have internal predecessors, (50168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41347 states to 41347 states and 50168 transitions. [2024-11-18 15:32:19,613 INFO L78 Accepts]: Start accepts. Automaton has 41347 states and 50168 transitions. Word has length 1751 [2024-11-18 15:32:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:19,613 INFO L471 AbstractCegarLoop]: Abstraction has 41347 states and 50168 transitions. [2024-11-18 15:32:19,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 2 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 41347 states and 50168 transitions. [2024-11-18 15:32:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1756 [2024-11-18 15:32:19,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:19,656 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, 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, 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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, 1, 1, 1] [2024-11-18 15:32:19,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 15:32:19,656 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:19,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2058691496, now seen corresponding path program 1 times [2024-11-18 15:32:19,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:19,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242400058] [2024-11-18 15:32:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:19,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242400058] [2024-11-18 15:32:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242400058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:21,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:32:21,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22326948] [2024-11-18 15:32:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:21,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:21,054 INFO L87 Difference]: Start difference. First operand 41347 states and 50168 transitions. Second operand has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:26,435 INFO L93 Difference]: Finished difference Result 96296 states and 117553 transitions. [2024-11-18 15:32:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:26,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 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 1755 [2024-11-18 15:32:26,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:26,541 INFO L225 Difference]: With dead ends: 96296 [2024-11-18 15:32:26,541 INFO L226 Difference]: Without dead ends: 54952 [2024-11-18 15:32:26,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:26,576 INFO L432 NwaCegarLoop]: 3801 mSDtfsCounter, 182 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5695 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 6605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 5695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:26,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 4070 Invalid, 6605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 5695 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-18 15:32:26,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54952 states. [2024-11-18 15:32:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54952 to 54931. [2024-11-18 15:32:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54931 states, 54930 states have (on average 1.1842708902239214) internal successors, (65052), 54930 states have internal predecessors, (65052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54931 states to 54931 states and 65052 transitions. [2024-11-18 15:32:27,199 INFO L78 Accepts]: Start accepts. Automaton has 54931 states and 65052 transitions. Word has length 1755 [2024-11-18 15:32:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:27,201 INFO L471 AbstractCegarLoop]: Abstraction has 54931 states and 65052 transitions. [2024-11-18 15:32:27,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:32:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 54931 states and 65052 transitions. [2024-11-18 15:32:27,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1770 [2024-11-18 15:32:27,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:27,265 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 15:32:27,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 15:32:27,266 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:27,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -677917218, now seen corresponding path program 1 times [2024-11-18 15:32:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508306933] [2024-11-18 15:32:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-18 15:32:28,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508306933] [2024-11-18 15:32:28,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508306933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:28,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:28,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:32:28,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115638500] [2024-11-18 15:32:28,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:28,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:28,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:28,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:28,521 INFO L87 Difference]: Start difference. First operand 54931 states and 65052 transitions. Second operand has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 3 states have internal predecessors, (1667), 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)