./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.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 e29588631802f33e276df8c8a4376435a271a426c8b5d54fd1eb814b142c7499 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 04:32:37,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 04:32:37,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 04:32:37,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 04:32:37,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 04:32:37,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 04:32:37,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 04:32:37,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 04:32:37,135 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 04:32:37,135 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 04:32:37,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 04:32:37,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 04:32:37,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 04:32:37,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 04:32:37,137 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 04:32:37,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 04:32:37,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 04:32:37,138 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 04:32:37,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 04:32:37,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 04:32:37,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 04:32:37,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 04:32:37,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 04:32:37,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 04:32:37,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 04:32:37,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 04:32:37,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 04:32:37,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 04:32:37,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 04:32:37,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 04:32:37,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 04:32:37,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 04:32:37,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:32:37,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 04:32:37,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 04:32:37,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 04:32:37,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 04:32:37,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 04:32:37,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 04:32:37,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 04:32:37,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 04:32:37,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 04:32:37,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29588631802f33e276df8c8a4376435a271a426c8b5d54fd1eb814b142c7499 [2024-10-14 04:32:37,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 04:32:37,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 04:32:37,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 04:32:37,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 04:32:37,481 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 04:32:37,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c [2024-10-14 04:32:38,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 04:32:39,522 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 04:32:39,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c [2024-10-14 04:32:39,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca616425/033c962190d74394b5d7672df6f9d658/FLAGb32a18bbe [2024-10-14 04:32:39,608 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca616425/033c962190d74394b5d7672df6f9d658 [2024-10-14 04:32:39,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 04:32:39,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 04:32:39,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 04:32:39,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 04:32:39,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 04:32:39,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:32:39" (1/1) ... [2024-10-14 04:32:39,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7c473b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:39, skipping insertion in model container [2024-10-14 04:32:39,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:32:39" (1/1) ... [2024-10-14 04:32:39,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 04:32:41,371 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c[377612,377625] [2024-10-14 04:32:41,397 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c[383339,383352] [2024-10-14 04:32:41,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:32:41,540 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 04:32:42,332 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c[377612,377625] [2024-10-14 04:32:42,340 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.02.cil-1.c[383339,383352] [2024-10-14 04:32:42,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:32:42,410 INFO L204 MainTranslator]: Completed translation [2024-10-14 04:32:42,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42 WrapperNode [2024-10-14 04:32:42,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 04:32:42,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 04:32:42,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 04:32:42,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 04:32:42,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:42,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:42,869 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2024-10-14 04:32:42,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 04:32:42,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 04:32:42,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 04:32:42,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 04:32:42,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:42,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,175 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 04:32:43,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 04:32:43,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 04:32:43,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 04:32:43,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 04:32:43,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (1/1) ... [2024-10-14 04:32:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:32:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:32:43,680 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) [2024-10-14 04:32:43,690 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 [2024-10-14 04:32:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 04:32:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-14 04:32:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-14 04:32:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-14 04:32:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-14 04:32:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-14 04:32:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-14 04:32:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-14 04:32:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-14 04:32:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-14 04:32:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-14 04:32:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 04:32:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-14 04:32:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-14 04:32:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 04:32:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 04:32:43,938 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 04:32:43,941 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 04:32:51,448 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-10-14 04:32:51,448 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 04:32:51,552 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 04:32:51,552 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 04:32:51,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:32:51 BoogieIcfgContainer [2024-10-14 04:32:51,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 04:32:51,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 04:32:51,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 04:32:51,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 04:32:51,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:32:39" (1/3) ... [2024-10-14 04:32:51,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aa98ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:32:51, skipping insertion in model container [2024-10-14 04:32:51,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:42" (2/3) ... [2024-10-14 04:32:51,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aa98ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:32:51, skipping insertion in model container [2024-10-14 04:32:51,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:32:51" (3/3) ... [2024-10-14 04:32:51,563 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.02.cil-1.c [2024-10-14 04:32:51,579 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 04:32:51,579 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 04:32:51,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 04:32:51,713 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;@28a74994, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 04:32:51,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 04:32:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 04:32:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:32:51,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:32:51,738 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] [2024-10-14 04:32:51,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:32:51,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:32:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -584044612, now seen corresponding path program 1 times [2024-10-14 04:32:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:32:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942012810] [2024-10-14 04:32:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:32:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:32:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:52,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:32:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:52,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:32:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:52,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:32:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:52,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:32:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:52,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:32:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:32:52,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:32:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942012810] [2024-10-14 04:32:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942012810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:32:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:32:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:32:52,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524914059] [2024-10-14 04:32:52,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:32:52,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:32:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:32:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:32:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:32:52,385 INFO L87 Difference]: Start difference. First operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:32:53,470 INFO L93 Difference]: Finished difference Result 4643 states and 8686 transitions. [2024-10-14 04:32:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 04:32:53,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-14 04:32:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:32:53,507 INFO L225 Difference]: With dead ends: 4643 [2024-10-14 04:32:53,507 INFO L226 Difference]: Without dead ends: 2404 [2024-10-14 04:32:53,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 04:32:53,524 INFO L432 NwaCegarLoop]: 4057 mSDtfsCounter, 4350 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16199 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 04:32:53,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16199 Invalid, 691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 04:32:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2024-10-14 04:32:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2345. [2024-10-14 04:32:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2303 states have (on average 1.84020842379505) internal successors, (4238), 2306 states have internal predecessors, (4238), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-10-14 04:32:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4295 transitions. [2024-10-14 04:32:53,691 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4295 transitions. Word has length 61 [2024-10-14 04:32:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:32:53,694 INFO L471 AbstractCegarLoop]: Abstraction has 2345 states and 4295 transitions. [2024-10-14 04:32:53,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4295 transitions. [2024-10-14 04:32:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:32:53,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:32:53,698 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] [2024-10-14 04:32:53,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 04:32:53,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:32:53,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:32:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1424404092, now seen corresponding path program 1 times [2024-10-14 04:32:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:32:53,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049799288] [2024-10-14 04:32:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:32:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:32:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:53,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:32:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:53,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:32:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:53,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:32:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:53,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:32:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:53,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:32:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:32:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:32:53,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049799288] [2024-10-14 04:32:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049799288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:32:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:32:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:32:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613648451] [2024-10-14 04:32:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:32:53,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:32:53,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:32:53,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:32:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:32:53,946 INFO L87 Difference]: Start difference. First operand 2345 states and 4295 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:32:55,036 INFO L93 Difference]: Finished difference Result 2757 states and 4924 transitions. [2024-10-14 04:32:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 04:32:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-14 04:32:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:32:55,049 INFO L225 Difference]: With dead ends: 2757 [2024-10-14 04:32:55,050 INFO L226 Difference]: Without dead ends: 2541 [2024-10-14 04:32:55,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-14 04:32:55,053 INFO L432 NwaCegarLoop]: 4121 mSDtfsCounter, 4342 mSDsluCounter, 16314 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 20435 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 04:32:55,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 20435 Invalid, 1048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 04:32:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2024-10-14 04:32:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2446. [2024-10-14 04:32:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2386 states have (on average 1.8281642917015926) internal successors, (4362), 2390 states have internal predecessors, (4362), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2024-10-14 04:32:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 4443 transitions. [2024-10-14 04:32:55,135 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 4443 transitions. Word has length 61 [2024-10-14 04:32:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:32:55,136 INFO L471 AbstractCegarLoop]: Abstraction has 2446 states and 4443 transitions. [2024-10-14 04:32:55,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 4443 transitions. [2024-10-14 04:32:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:32:55,138 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:32:55,139 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] [2024-10-14 04:32:55,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 04:32:55,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:32:55,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:32:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1408885374, now seen corresponding path program 1 times [2024-10-14 04:32:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:32:55,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143346415] [2024-10-14 04:32:55,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:32:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:32:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:55,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:32:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:55,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:32:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:55,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:32:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:55,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:32:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:55,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:32:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:32:55,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:32:55,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143346415] [2024-10-14 04:32:55,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143346415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:32:55,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:32:55,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:32:55,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451780031] [2024-10-14 04:32:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:32:55,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:32:55,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:32:55,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:32:55,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:32:55,283 INFO L87 Difference]: Start difference. First operand 2446 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:32:56,250 INFO L93 Difference]: Finished difference Result 3115 states and 5460 transitions. [2024-10-14 04:32:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 04:32:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-14 04:32:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:32:56,263 INFO L225 Difference]: With dead ends: 3115 [2024-10-14 04:32:56,264 INFO L226 Difference]: Without dead ends: 2798 [2024-10-14 04:32:56,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-14 04:32:56,266 INFO L432 NwaCegarLoop]: 4062 mSDtfsCounter, 4378 mSDsluCounter, 16167 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 20229 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 04:32:56,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4387 Valid, 20229 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 04:32:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-10-14 04:32:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2649. [2024-10-14 04:32:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2553 states have (on average 1.8061104582843712) internal successors, (4611), 2559 states have internal predecessors, (4611), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2024-10-14 04:32:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 4744 transitions. [2024-10-14 04:32:56,354 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 4744 transitions. Word has length 61 [2024-10-14 04:32:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:32:56,354 INFO L471 AbstractCegarLoop]: Abstraction has 2649 states and 4744 transitions. [2024-10-14 04:32:56,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 4744 transitions. [2024-10-14 04:32:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:32:56,357 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:32:56,357 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] [2024-10-14 04:32:56,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 04:32:56,357 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:32:56,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:32:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash -946919876, now seen corresponding path program 1 times [2024-10-14 04:32:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:32:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822174531] [2024-10-14 04:32:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:32:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:32:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:56,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:32:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:56,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:32:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:56,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:32:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:56,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:32:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:56,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:32:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:32:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:32:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822174531] [2024-10-14 04:32:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822174531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:32:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:32:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:32:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586530435] [2024-10-14 04:32:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:32:56,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:32:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:32:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:32:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:32:56,516 INFO L87 Difference]: Start difference. First operand 2649 states and 4744 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:32:57,643 INFO L93 Difference]: Finished difference Result 3887 states and 6619 transitions. [2024-10-14 04:32:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 04:32:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-14 04:32:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:32:57,667 INFO L225 Difference]: With dead ends: 3887 [2024-10-14 04:32:57,667 INFO L226 Difference]: Without dead ends: 3367 [2024-10-14 04:32:57,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-14 04:32:57,674 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4350 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 20422 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 04:32:57,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 20422 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 04:32:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-10-14 04:32:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3033. [2024-10-14 04:32:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2869 states have (on average 1.7716974555594285) internal successors, (5083), 2879 states have internal predecessors, (5083), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2024-10-14 04:32:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5318 transitions. [2024-10-14 04:32:57,794 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5318 transitions. Word has length 61 [2024-10-14 04:32:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:32:57,795 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 5318 transitions. [2024-10-14 04:32:57,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5318 transitions. [2024-10-14 04:32:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:32:57,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:32:57,797 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] [2024-10-14 04:32:57,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 04:32:57,798 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:32:57,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:32:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 981352826, now seen corresponding path program 1 times [2024-10-14 04:32:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:32:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31160081] [2024-10-14 04:32:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:32:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:32:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:57,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:32:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:57,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:32:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:57,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:32:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:57,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:32:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:57,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:32:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:32:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:32:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31160081] [2024-10-14 04:32:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31160081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:32:57,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:32:57,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:32:57,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313172797] [2024-10-14 04:32:57,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:32:57,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:32:57,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:32:57,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:32:57,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:32:57,911 INFO L87 Difference]: Start difference. First operand 3033 states and 5318 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:32:58,833 INFO L93 Difference]: Finished difference Result 5185 states and 8559 transitions. [2024-10-14 04:32:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 04:32:58,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-14 04:32:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:32:58,853 INFO L225 Difference]: With dead ends: 5185 [2024-10-14 04:32:58,853 INFO L226 Difference]: Without dead ends: 4281 [2024-10-14 04:32:58,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-14 04:32:58,859 INFO L432 NwaCegarLoop]: 4117 mSDtfsCounter, 4350 mSDsluCounter, 16309 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 20426 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 04:32:58,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 20426 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 04:32:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2024-10-14 04:32:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3818. [2024-10-14 04:32:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3522 states have (on average 1.7208972174900625) internal successors, (6061), 3540 states have internal predecessors, (6061), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2024-10-14 04:32:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6510 transitions. [2024-10-14 04:32:59,005 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6510 transitions. Word has length 61 [2024-10-14 04:32:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:32:59,005 INFO L471 AbstractCegarLoop]: Abstraction has 3818 states and 6510 transitions. [2024-10-14 04:32:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:32:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6510 transitions. [2024-10-14 04:32:59,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:32:59,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:32:59,009 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] [2024-10-14 04:32:59,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 04:32:59,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:32:59,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:32:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1874839164, now seen corresponding path program 1 times [2024-10-14 04:32:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:32:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913705426] [2024-10-14 04:32:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:32:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:32:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:59,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:32:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:59,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:32:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:59,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:32:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:59,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:32:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:59,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:32:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:32:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:32:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:32:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913705426] [2024-10-14 04:32:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913705426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:32:59,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:32:59,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:32:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727507379] [2024-10-14 04:32:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:32:59,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:32:59,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:32:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:32:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:32:59,112 INFO L87 Difference]: Start difference. First operand 3818 states and 6510 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:33:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:00,004 INFO L93 Difference]: Finished difference Result 6913 states and 11211 transitions. [2024-10-14 04:33:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 04:33:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-14 04:33:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:00,030 INFO L225 Difference]: With dead ends: 6913 [2024-10-14 04:33:00,030 INFO L226 Difference]: Without dead ends: 5225 [2024-10-14 04:33:00,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-14 04:33:00,039 INFO L432 NwaCegarLoop]: 4142 mSDtfsCounter, 4472 mSDsluCounter, 12167 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 16309 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:00,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 16309 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 04:33:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2024-10-14 04:33:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 4690. [2024-10-14 04:33:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4236 states have (on average 1.674929178470255) internal successors, (7095), 4271 states have internal predecessors, (7095), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2024-10-14 04:33:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7764 transitions. [2024-10-14 04:33:00,241 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7764 transitions. Word has length 61 [2024-10-14 04:33:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:00,241 INFO L471 AbstractCegarLoop]: Abstraction has 4690 states and 7764 transitions. [2024-10-14 04:33:00,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 04:33:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7764 transitions. [2024-10-14 04:33:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 04:33:00,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:00,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:33:00,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 04:33:00,250 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:00,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2042674346, now seen corresponding path program 1 times [2024-10-14 04:33:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:00,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372606119] [2024-10-14 04:33:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:00,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:33:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 04:33:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 04:33:00,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372606119] [2024-10-14 04:33:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372606119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439517132] [2024-10-14 04:33:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:00,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:00,397 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) [2024-10-14 04:33:00,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 04:33:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:00,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:00,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 04:33:00,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439517132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:00,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:00,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-14 04:33:00,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5547716] [2024-10-14 04:33:00,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:00,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:00,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:00,575 INFO L87 Difference]: Start difference. First operand 4690 states and 7764 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-14 04:33:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:00,868 INFO L93 Difference]: Finished difference Result 9693 states and 15244 transitions. [2024-10-14 04:33:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2024-10-14 04:33:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:00,927 INFO L225 Difference]: With dead ends: 9693 [2024-10-14 04:33:00,927 INFO L226 Difference]: Without dead ends: 7133 [2024-10-14 04:33:00,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:00,941 INFO L432 NwaCegarLoop]: 4114 mSDtfsCounter, 4092 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:00,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4254 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7133 states. [2024-10-14 04:33:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7133 to 7105. [2024-10-14 04:33:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 6237 states have (on average 1.6091069424402757) internal successors, (10036), 6305 states have internal predecessors, (10036), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2024-10-14 04:33:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11291 transitions. [2024-10-14 04:33:01,372 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 11291 transitions. Word has length 99 [2024-10-14 04:33:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:01,373 INFO L471 AbstractCegarLoop]: Abstraction has 7105 states and 11291 transitions. [2024-10-14 04:33:01,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-14 04:33:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 11291 transitions. [2024-10-14 04:33:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 04:33:01,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:01,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:33:01,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 04:33:01,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:01,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:01,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1877378954, now seen corresponding path program 1 times [2024-10-14 04:33:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008498736] [2024-10-14 04:33:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:33:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 04:33:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 04:33:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008498736] [2024-10-14 04:33:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008498736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45027750] [2024-10-14 04:33:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:01,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:01,699 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) [2024-10-14 04:33:01,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 04:33:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:01,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:01,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 04:33:01,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45027750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:01,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:01,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244691936] [2024-10-14 04:33:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:01,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:01,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:01,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:01,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:01,825 INFO L87 Difference]: Start difference. First operand 7105 states and 11291 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-14 04:33:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:02,296 INFO L93 Difference]: Finished difference Result 16767 states and 25811 transitions. [2024-10-14 04:33:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:02,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-10-14 04:33:02,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:02,345 INFO L225 Difference]: With dead ends: 16767 [2024-10-14 04:33:02,345 INFO L226 Difference]: Without dead ends: 11793 [2024-10-14 04:33:02,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:02,367 INFO L432 NwaCegarLoop]: 4254 mSDtfsCounter, 145 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8367 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:02,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8367 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2024-10-14 04:33:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 11793. [2024-10-14 04:33:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 10112 states have (on average 1.5505340189873418) internal successors, (15679), 10229 states have internal predecessors, (15679), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2024-10-14 04:33:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18250 transitions. [2024-10-14 04:33:03,221 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18250 transitions. Word has length 99 [2024-10-14 04:33:03,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:03,222 INFO L471 AbstractCegarLoop]: Abstraction has 11793 states and 18250 transitions. [2024-10-14 04:33:03,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-14 04:33:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18250 transitions. [2024-10-14 04:33:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-14 04:33:03,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:03,251 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:33:03,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 04:33:03,452 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,SelfDestructingSolverStorable7 [2024-10-14 04:33:03,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:03,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1335572908, now seen corresponding path program 1 times [2024-10-14 04:33:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46685138] [2024-10-14 04:33:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:33:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-14 04:33:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 04:33:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 04:33:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46685138] [2024-10-14 04:33:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46685138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350993546] [2024-10-14 04:33:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:03,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:03,585 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) [2024-10-14 04:33:03,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 04:33:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:03,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:03,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 04:33:03,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:03,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350993546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:03,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-14 04:33:03,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359708895] [2024-10-14 04:33:03,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:03,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:03,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:03,809 INFO L87 Difference]: Start difference. First operand 11793 states and 18250 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 04:33:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:04,691 INFO L93 Difference]: Finished difference Result 30733 states and 46555 transitions. [2024-10-14 04:33:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:04,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 127 [2024-10-14 04:33:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:04,789 INFO L225 Difference]: With dead ends: 30733 [2024-10-14 04:33:04,789 INFO L226 Difference]: Without dead ends: 21075 [2024-10-14 04:33:04,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:04,854 INFO L432 NwaCegarLoop]: 4117 mSDtfsCounter, 4053 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4053 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:04,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4053 Valid, 4257 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21075 states. [2024-10-14 04:33:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21075 to 20969. [2024-10-14 04:33:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20969 states, 17708 states have (on average 1.5070589564038852) internal successors, (26687), 17939 states have internal predecessors, (26687), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2024-10-14 04:33:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20969 states to 20969 states and 31594 transitions. [2024-10-14 04:33:05,955 INFO L78 Accepts]: Start accepts. Automaton has 20969 states and 31594 transitions. Word has length 127 [2024-10-14 04:33:05,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:05,956 INFO L471 AbstractCegarLoop]: Abstraction has 20969 states and 31594 transitions. [2024-10-14 04:33:05,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 04:33:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 20969 states and 31594 transitions. [2024-10-14 04:33:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 04:33:06,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:06,027 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, 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] [2024-10-14 04:33:06,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 04:33:06,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:06,232 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:06,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash 791512030, now seen corresponding path program 1 times [2024-10-14 04:33:06,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:06,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749223202] [2024-10-14 04:33:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:06,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 04:33:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-14 04:33:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:33:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 04:33:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 04:33:06,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749223202] [2024-10-14 04:33:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749223202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547442239] [2024-10-14 04:33:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:06,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:06,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:06,352 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) [2024-10-14 04:33:06,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 04:33:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:06,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:06,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 04:33:06,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547442239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:06,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:06,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002907831] [2024-10-14 04:33:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:06,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:06,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:06,528 INFO L87 Difference]: Start difference. First operand 20969 states and 31594 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, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 04:33:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:07,481 INFO L93 Difference]: Finished difference Result 33443 states and 50451 transitions. [2024-10-14 04:33:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:07,481 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, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 143 [2024-10-14 04:33:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:07,547 INFO L225 Difference]: With dead ends: 33443 [2024-10-14 04:33:07,548 INFO L226 Difference]: Without dead ends: 18715 [2024-10-14 04:33:07,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:07,589 INFO L432 NwaCegarLoop]: 4114 mSDtfsCounter, 4086 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:07,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4142 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18715 states. [2024-10-14 04:33:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18715 to 14099. [2024-10-14 04:33:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14099 states, 12046 states have (on average 1.4857214012950357) internal successors, (17897), 12167 states have internal predecessors, (17897), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 890 states have return successors, (1648), 1153 states have call predecessors, (1648), 1161 states have call successors, (1648) [2024-10-14 04:33:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 20706 transitions. [2024-10-14 04:33:08,431 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 20706 transitions. Word has length 143 [2024-10-14 04:33:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:08,433 INFO L471 AbstractCegarLoop]: Abstraction has 14099 states and 20706 transitions. [2024-10-14 04:33:08,433 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, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 04:33:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 20706 transitions. [2024-10-14 04:33:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 04:33:08,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:08,461 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-14 04:33:08,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 04:33:08,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:08,662 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:08,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2075302660, now seen corresponding path program 1 times [2024-10-14 04:33:08,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255600367] [2024-10-14 04:33:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 04:33:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-14 04:33:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:33:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 04:33:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 04:33:08,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:08,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255600367] [2024-10-14 04:33:08,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255600367] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:08,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129696365] [2024-10-14 04:33:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:08,785 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) [2024-10-14 04:33:08,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 04:33:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:08,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 04:33:08,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-14 04:33:08,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129696365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:08,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117716145] [2024-10-14 04:33:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:08,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:08,934 INFO L87 Difference]: Start difference. First operand 14099 states and 20706 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-14 04:33:10,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:10,118 INFO L93 Difference]: Finished difference Result 23244 states and 33469 transitions. [2024-10-14 04:33:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:10,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 143 [2024-10-14 04:33:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:10,177 INFO L225 Difference]: With dead ends: 23244 [2024-10-14 04:33:10,178 INFO L226 Difference]: Without dead ends: 14923 [2024-10-14 04:33:10,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:10,205 INFO L432 NwaCegarLoop]: 4144 mSDtfsCounter, 4079 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:10,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 4289 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2024-10-14 04:33:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14857. [2024-10-14 04:33:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14857 states, 12716 states have (on average 1.4599716892104435) internal successors, (18565), 12837 states have internal predecessors, (18565), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 956 states have return successors, (1736), 1175 states have call predecessors, (1736), 1183 states have call successors, (1736) [2024-10-14 04:33:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 21484 transitions. [2024-10-14 04:33:11,319 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 21484 transitions. Word has length 143 [2024-10-14 04:33:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:11,320 INFO L471 AbstractCegarLoop]: Abstraction has 14857 states and 21484 transitions. [2024-10-14 04:33:11,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-14 04:33:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 21484 transitions. [2024-10-14 04:33:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 04:33:11,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:11,342 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, 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] [2024-10-14 04:33:11,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 04:33:11,543 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,SelfDestructingSolverStorable10 [2024-10-14 04:33:11,544 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:11,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1556193784, now seen corresponding path program 1 times [2024-10-14 04:33:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423554766] [2024-10-14 04:33:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:33:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 04:33:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-14 04:33:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-14 04:33:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 04:33:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:11,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423554766] [2024-10-14 04:33:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423554766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289901616] [2024-10-14 04:33:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:11,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:11,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:11,653 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) [2024-10-14 04:33:11,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 04:33:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:11,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:11,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 04:33:11,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289901616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:11,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:11,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282290411] [2024-10-14 04:33:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:11,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:11,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:11,790 INFO L87 Difference]: Start difference. First operand 14857 states and 21484 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-14 04:33:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:12,906 INFO L93 Difference]: Finished difference Result 39509 states and 55950 transitions. [2024-10-14 04:33:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:12,906 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), 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 144 [2024-10-14 04:33:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:12,993 INFO L225 Difference]: With dead ends: 39509 [2024-10-14 04:33:12,994 INFO L226 Difference]: Without dead ends: 26789 [2024-10-14 04:33:13,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:13,024 INFO L432 NwaCegarLoop]: 4252 mSDtfsCounter, 135 mSDsluCounter, 4111 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:13,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 8363 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26789 states. [2024-10-14 04:33:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26789 to 26743. [2024-10-14 04:33:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26743 states, 22644 states have (on average 1.4140169581346052) internal successors, (32019), 22885 states have internal predecessors, (32019), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 1852 states have return successors, (3798), 2229 states have call predecessors, (3798), 2245 states have call successors, (3798) [2024-10-14 04:33:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26743 states to 26743 states and 38062 transitions. [2024-10-14 04:33:14,570 INFO L78 Accepts]: Start accepts. Automaton has 26743 states and 38062 transitions. Word has length 144 [2024-10-14 04:33:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:14,571 INFO L471 AbstractCegarLoop]: Abstraction has 26743 states and 38062 transitions. [2024-10-14 04:33:14,571 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), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-14 04:33:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 26743 states and 38062 transitions. [2024-10-14 04:33:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 04:33:14,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:14,608 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, 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] [2024-10-14 04:33:14,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 04:33:14,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:14,810 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:14,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash 125794537, now seen corresponding path program 1 times [2024-10-14 04:33:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891246284] [2024-10-14 04:33:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:33:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 04:33:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:33:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-14 04:33:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 04:33:14,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:14,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891246284] [2024-10-14 04:33:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891246284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:14,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669789778] [2024-10-14 04:33:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:14,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:14,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:14,932 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) [2024-10-14 04:33:14,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 04:33:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:15,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:15,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 04:33:15,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669789778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:15,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:15,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730464829] [2024-10-14 04:33:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:15,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:15,123 INFO L87 Difference]: Start difference. First operand 26743 states and 38062 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 04:33:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:16,430 INFO L93 Difference]: Finished difference Result 52491 states and 75074 transitions. [2024-10-14 04:33:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2024-10-14 04:33:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:16,540 INFO L225 Difference]: With dead ends: 52491 [2024-10-14 04:33:16,540 INFO L226 Difference]: Without dead ends: 27885 [2024-10-14 04:33:16,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:16,599 INFO L432 NwaCegarLoop]: 4108 mSDtfsCounter, 4065 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:16,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 4135 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27885 states. [2024-10-14 04:33:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27885 to 27841. [2024-10-14 04:33:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 23682 states have (on average 1.3691833460011824) internal successors, (32425), 23923 states have internal predecessors, (32425), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3754), 2229 states have call predecessors, (3754), 2245 states have call successors, (3754) [2024-10-14 04:33:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 38424 transitions. [2024-10-14 04:33:18,774 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 38424 transitions. Word has length 144 [2024-10-14 04:33:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:18,775 INFO L471 AbstractCegarLoop]: Abstraction has 27841 states and 38424 transitions. [2024-10-14 04:33:18,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 04:33:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 38424 transitions. [2024-10-14 04:33:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 04:33:18,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:18,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-14 04:33:18,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 04:33:19,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:19,026 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:19,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash -782339540, now seen corresponding path program 1 times [2024-10-14 04:33:19,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:19,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626351499] [2024-10-14 04:33:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:33:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 04:33:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:33:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-14 04:33:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 04:33:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626351499] [2024-10-14 04:33:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626351499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838017841] [2024-10-14 04:33:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:19,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:19,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:19,222 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) [2024-10-14 04:33:19,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 04:33:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:19,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:33:19,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 04:33:19,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:19,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838017841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:19,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:19,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524219420] [2024-10-14 04:33:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:19,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:19,355 INFO L87 Difference]: Start difference. First operand 27841 states and 38424 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-14 04:33:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:21,935 INFO L93 Difference]: Finished difference Result 75539 states and 103548 transitions. [2024-10-14 04:33:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 144 [2024-10-14 04:33:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:22,205 INFO L225 Difference]: With dead ends: 75539 [2024-10-14 04:33:22,205 INFO L226 Difference]: Without dead ends: 49843 [2024-10-14 04:33:22,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:22,257 INFO L432 NwaCegarLoop]: 4247 mSDtfsCounter, 139 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:22,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 8354 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49843 states. [2024-10-14 04:33:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49843 to 49841. [2024-10-14 04:33:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49841 states, 41974 states have (on average 1.333468337542288) internal successors, (55971), 42455 states have internal predecessors, (55971), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-10-14 04:33:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49841 states to 49841 states and 68436 transitions. [2024-10-14 04:33:25,618 INFO L78 Accepts]: Start accepts. Automaton has 49841 states and 68436 transitions. Word has length 144 [2024-10-14 04:33:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:33:25,618 INFO L471 AbstractCegarLoop]: Abstraction has 49841 states and 68436 transitions. [2024-10-14 04:33:25,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-14 04:33:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 49841 states and 68436 transitions. [2024-10-14 04:33:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-14 04:33:25,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:33:25,678 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:33:25,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 04:33:25,878 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,SelfDestructingSolverStorable13 [2024-10-14 04:33:25,879 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:33:25,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:33:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash -873894743, now seen corresponding path program 1 times [2024-10-14 04:33:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:33:25,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406991375] [2024-10-14 04:33:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:33:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:33:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:33:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:33:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:33:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:33:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 04:33:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 04:33:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:25,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:26,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-14 04:33:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:26,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:33:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:26,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-14 04:33:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-14 04:33:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:33:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406991375] [2024-10-14 04:33:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406991375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:33:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925737879] [2024-10-14 04:33:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:33:26,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:33:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:33:26,017 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) [2024-10-14 04:33:26,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 04:33:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:33:26,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 04:33:26,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:33:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 04:33:26,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:33:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925737879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:33:26,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:33:26,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:33:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447108759] [2024-10-14 04:33:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:33:26,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:33:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:33:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:33:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:26,172 INFO L87 Difference]: Start difference. First operand 49841 states and 68436 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-14 04:33:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:33:29,130 INFO L93 Difference]: Finished difference Result 87149 states and 119166 transitions. [2024-10-14 04:33:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:33:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 145 [2024-10-14 04:33:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:33:29,360 INFO L225 Difference]: With dead ends: 87149 [2024-10-14 04:33:29,360 INFO L226 Difference]: Without dead ends: 51011 [2024-10-14 04:33:29,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:33:29,686 INFO L432 NwaCegarLoop]: 4134 mSDtfsCounter, 4085 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:33:29,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4275 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:33:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51011 states.