./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_label40+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_label40+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 bd23dfa6335616d8eec5b9783c1f6df5ab0e74e3c379835195329e627de34889 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 04:19:35,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 04:19:35,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 04:19:35,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 04:19:35,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 04:19:35,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 04:19:35,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 04:19:35,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 04:19:35,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 04:19:35,623 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 04:19:35,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 04:19:35,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 04:19:35,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 04:19:35,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 04:19:35,625 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 04:19:35,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 04:19:35,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 04:19:35,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 04:19:35,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 04:19:35,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 04:19:35,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 04:19:35,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 04:19:35,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 04:19:35,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 04:19:35,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 04:19:35,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 04:19:35,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 04:19:35,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 04:19:35,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 04:19:35,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 04:19:35,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 04:19:35,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 04:19:35,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:19:35,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 04:19:35,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 04:19:35,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 04:19:35,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 04:19:35,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 04:19:35,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 04:19:35,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 04:19:35,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 04:19:35,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 04:19:35,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd23dfa6335616d8eec5b9783c1f6df5ab0e74e3c379835195329e627de34889 [2024-10-14 04:19:35,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 04:19:35,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 04:19:35,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 04:19:35,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 04:19:35,959 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 04:19:35,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.02.cil-1.c [2024-10-14 04:19:37,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 04:19:38,030 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 04:19:38,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.02.cil-1.c [2024-10-14 04:19:38,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5fa9565/3fa08e6d5660442db2b9c14e6aa413b1/FLAGef7c92604 [2024-10-14 04:19:38,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5fa9565/3fa08e6d5660442db2b9c14e6aa413b1 [2024-10-14 04:19:38,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 04:19:38,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 04:19:38,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 04:19:38,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 04:19:38,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 04:19:38,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:38" (1/1) ... [2024-10-14 04:19:38,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@979388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:38, skipping insertion in model container [2024-10-14 04:19:38,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:38" (1/1) ... [2024-10-14 04:19:38,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 04:19:39,884 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_label40+token_ring.02.cil-1.c[377069,377082] [2024-10-14 04:19:39,920 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_label40+token_ring.02.cil-1.c[383339,383352] [2024-10-14 04:19:40,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:19:40,068 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 04:19:40,900 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_label40+token_ring.02.cil-1.c[377069,377082] [2024-10-14 04:19:40,910 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_label40+token_ring.02.cil-1.c[383339,383352] [2024-10-14 04:19:40,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:19:40,994 INFO L204 MainTranslator]: Completed translation [2024-10-14 04:19:40,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40 WrapperNode [2024-10-14 04:19:40,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 04:19:40,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 04:19:40,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 04:19:40,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 04:19:41,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,482 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2024-10-14 04:19:41,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 04:19:41,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 04:19:41,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 04:19:41,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 04:19:41,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,678 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 04:19:41,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:41,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:42,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 04:19:42,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 04:19:42,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 04:19:42,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 04:19:42,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (1/1) ... [2024-10-14 04:19:42,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:19:42,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:19:42,095 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 04:19:42,097 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 04:19:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 04:19:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-14 04:19:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-14 04:19:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-14 04:19:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-14 04:19:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-14 04:19:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-14 04:19:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-14 04:19:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-14 04:19:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-14 04:19:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-14 04:19:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 04:19:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-14 04:19:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-14 04:19:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 04:19:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 04:19:42,229 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 04:19:42,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 04:19:49,735 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-10-14 04:19:49,735 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 04:19:49,842 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 04:19:49,842 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 04:19:49,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:49 BoogieIcfgContainer [2024-10-14 04:19:49,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 04:19:49,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 04:19:49,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 04:19:49,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 04:19:49,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:19:38" (1/3) ... [2024-10-14 04:19:49,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bf201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:49, skipping insertion in model container [2024-10-14 04:19:49,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:40" (2/3) ... [2024-10-14 04:19:49,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bf201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:49, skipping insertion in model container [2024-10-14 04:19:49,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:49" (3/3) ... [2024-10-14 04:19:49,854 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.02.cil-1.c [2024-10-14 04:19:49,870 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 04:19:49,870 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 04:19:49,987 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 04:19:49,993 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;@379433f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 04:19:49,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 04:19:50,005 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 04:19:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:19:50,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:50,018 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 04:19:50,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:50,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash -584044612, now seen corresponding path program 1 times [2024-10-14 04:19:50,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615127672] [2024-10-14 04:19:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:50,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:50,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:50,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:50,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:50,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:50,598 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 04:19:50,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615127672] [2024-10-14 04:19:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615127672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:19:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:19:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745859413] [2024-10-14 04:19:50,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:50,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:19:50,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:19:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:19:50,649 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 04:19:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:51,729 INFO L93 Difference]: Finished difference Result 4643 states and 8686 transitions. [2024-10-14 04:19:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 04:19:51,731 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 04:19:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:51,762 INFO L225 Difference]: With dead ends: 4643 [2024-10-14 04:19:51,762 INFO L226 Difference]: Without dead ends: 2404 [2024-10-14 04:19:51,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 04:19:51,780 INFO L432 NwaCegarLoop]: 4057 mSDtfsCounter, 4350 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 04:19:51,781 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 04:19:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2024-10-14 04:19:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2345. [2024-10-14 04:19:51,927 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 04:19:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4295 transitions. [2024-10-14 04:19:51,942 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4295 transitions. Word has length 61 [2024-10-14 04:19:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:19:51,944 INFO L471 AbstractCegarLoop]: Abstraction has 2345 states and 4295 transitions. [2024-10-14 04:19:51,944 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 04:19:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4295 transitions. [2024-10-14 04:19:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:19:51,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:51,948 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 04:19:51,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 04:19:51,948 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:51,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1424404092, now seen corresponding path program 1 times [2024-10-14 04:19:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033388907] [2024-10-14 04:19:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:52,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:52,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:52,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:52,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:52,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:52,183 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 04:19:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033388907] [2024-10-14 04:19:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033388907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:19:52,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:19:52,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234698416] [2024-10-14 04:19:52,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:52,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:19:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:19:52,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:19:52,191 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 04:19:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:53,253 INFO L93 Difference]: Finished difference Result 2757 states and 4924 transitions. [2024-10-14 04:19:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 04:19:53,254 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 04:19:53,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:53,266 INFO L225 Difference]: With dead ends: 2757 [2024-10-14 04:19:53,267 INFO L226 Difference]: Without dead ends: 2541 [2024-10-14 04:19:53,269 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 04:19:53,270 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 04:19:53,271 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 04:19:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2024-10-14 04:19:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2446. [2024-10-14 04:19:53,343 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 04:19:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 4443 transitions. [2024-10-14 04:19:53,357 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 4443 transitions. Word has length 61 [2024-10-14 04:19:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:19:53,358 INFO L471 AbstractCegarLoop]: Abstraction has 2446 states and 4443 transitions. [2024-10-14 04:19:53,359 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 04:19:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 4443 transitions. [2024-10-14 04:19:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:19:53,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:53,366 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 04:19:53,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 04:19:53,366 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:53,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1408885374, now seen corresponding path program 1 times [2024-10-14 04:19:53,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:53,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479441119] [2024-10-14 04:19:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:53,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:53,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:53,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:53,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:53,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:53,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:53,536 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 04:19:53,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479441119] [2024-10-14 04:19:53,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479441119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:53,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:19:53,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:19:53,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655577066] [2024-10-14 04:19:53,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:53,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:19:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:19:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:19:53,540 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 04:19:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:54,484 INFO L93 Difference]: Finished difference Result 3115 states and 5460 transitions. [2024-10-14 04:19:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 04:19:54,484 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 04:19:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:54,500 INFO L225 Difference]: With dead ends: 3115 [2024-10-14 04:19:54,501 INFO L226 Difference]: Without dead ends: 2798 [2024-10-14 04:19:54,505 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 04:19:54,506 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 04:19:54,507 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 04:19:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-10-14 04:19:54,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2649. [2024-10-14 04:19:54,593 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 04:19:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 4744 transitions. [2024-10-14 04:19:54,608 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 4744 transitions. Word has length 61 [2024-10-14 04:19:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:19:54,608 INFO L471 AbstractCegarLoop]: Abstraction has 2649 states and 4744 transitions. [2024-10-14 04:19:54,609 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 04:19:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 4744 transitions. [2024-10-14 04:19:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:19:54,613 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:54,613 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 04:19:54,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 04:19:54,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:54,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash -946919876, now seen corresponding path program 1 times [2024-10-14 04:19:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366867761] [2024-10-14 04:19:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:54,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:54,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:54,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:54,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:54,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:54,744 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 04:19:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366867761] [2024-10-14 04:19:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366867761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:54,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:19:54,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:19:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180668155] [2024-10-14 04:19:54,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:54,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:19:54,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:19:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:19:54,747 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 04:19:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:55,979 INFO L93 Difference]: Finished difference Result 3887 states and 6619 transitions. [2024-10-14 04:19:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 04:19:55,980 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 04:19:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:55,993 INFO L225 Difference]: With dead ends: 3887 [2024-10-14 04:19:55,993 INFO L226 Difference]: Without dead ends: 3367 [2024-10-14 04:19:55,995 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 04:19:55,996 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 04:19:55,996 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 04:19:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-10-14 04:19:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3033. [2024-10-14 04:19:56,095 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 04:19:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5318 transitions. [2024-10-14 04:19:56,108 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5318 transitions. Word has length 61 [2024-10-14 04:19:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:19:56,108 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 5318 transitions. [2024-10-14 04:19:56,108 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 04:19:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5318 transitions. [2024-10-14 04:19:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:19:56,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:56,111 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 04:19:56,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 04:19:56,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:56,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 981352826, now seen corresponding path program 1 times [2024-10-14 04:19:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:56,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714163720] [2024-10-14 04:19:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:56,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:56,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:56,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:56,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:56,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:56,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:56,270 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 04:19:56,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714163720] [2024-10-14 04:19:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714163720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:56,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:19:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 04:19:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864536437] [2024-10-14 04:19:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:56,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 04:19:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 04:19:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:19:56,273 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 04:19:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:57,280 INFO L93 Difference]: Finished difference Result 5185 states and 8559 transitions. [2024-10-14 04:19:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 04:19:57,281 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 04:19:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:57,301 INFO L225 Difference]: With dead ends: 5185 [2024-10-14 04:19:57,301 INFO L226 Difference]: Without dead ends: 4281 [2024-10-14 04:19:57,307 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 04:19:57,308 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 04:19:57,309 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 04:19:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2024-10-14 04:19:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3818. [2024-10-14 04:19:57,472 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 04:19:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6510 transitions. [2024-10-14 04:19:57,485 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6510 transitions. Word has length 61 [2024-10-14 04:19:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:19:57,485 INFO L471 AbstractCegarLoop]: Abstraction has 3818 states and 6510 transitions. [2024-10-14 04:19:57,485 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 04:19:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6510 transitions. [2024-10-14 04:19:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:19:57,488 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:57,488 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 04:19:57,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 04:19:57,488 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:57,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1874839164, now seen corresponding path program 1 times [2024-10-14 04:19:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858633923] [2024-10-14 04:19:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:57,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:57,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:57,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:57,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:57,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:57,592 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 04:19:57,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858633923] [2024-10-14 04:19:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858633923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:19:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:19:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697824610] [2024-10-14 04:19:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:57,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:19:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:19:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:19:57,596 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 04:19:58,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:58,666 INFO L93 Difference]: Finished difference Result 6913 states and 11211 transitions. [2024-10-14 04:19:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 04:19:58,667 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 04:19:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:58,702 INFO L225 Difference]: With dead ends: 6913 [2024-10-14 04:19:58,703 INFO L226 Difference]: Without dead ends: 5225 [2024-10-14 04:19:58,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-14 04:19:58,711 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 04:19:58,712 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 04:19:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2024-10-14 04:19:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 4690. [2024-10-14 04:19:58,912 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 04:19:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7764 transitions. [2024-10-14 04:19:58,933 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7764 transitions. Word has length 61 [2024-10-14 04:19:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:19:58,934 INFO L471 AbstractCegarLoop]: Abstraction has 4690 states and 7764 transitions. [2024-10-14 04:19:58,934 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 04:19:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7764 transitions. [2024-10-14 04:19:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 04:19:58,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:19:58,942 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 04:19:58,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 04:19:58,942 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:19:58,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:19:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2042674346, now seen corresponding path program 1 times [2024-10-14 04:19:58,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:19:58,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167584138] [2024-10-14 04:19:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:19:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:58,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:19:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:19:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:19:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:19:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:19:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:19:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:19:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 04:19:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,089 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 04:19:59,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:19:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167584138] [2024-10-14 04:19:59,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167584138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:19:59,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568868888] [2024-10-14 04:19:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:19:59,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:19:59,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:19:59,092 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 04:19:59,093 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 04:19:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:19:59,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:19:59,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:19:59,261 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 04:19:59,262 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:19:59,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568868888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:19:59,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:19:59,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-14 04:19:59,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422052650] [2024-10-14 04:19:59,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:19:59,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:19:59,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:19:59,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:19:59,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:19:59,265 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 04:19:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:19:59,598 INFO L93 Difference]: Finished difference Result 9693 states and 15244 transitions. [2024-10-14 04:19:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:19:59,600 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 04:19:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:19:59,651 INFO L225 Difference]: With dead ends: 9693 [2024-10-14 04:19:59,652 INFO L226 Difference]: Without dead ends: 7133 [2024-10-14 04:19:59,663 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 04:19:59,664 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 04:19:59,664 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 04:19:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7133 states. [2024-10-14 04:20:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7133 to 7105. [2024-10-14 04:20:00,148 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 04:20:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11291 transitions. [2024-10-14 04:20:00,177 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 11291 transitions. Word has length 99 [2024-10-14 04:20:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:00,178 INFO L471 AbstractCegarLoop]: Abstraction has 7105 states and 11291 transitions. [2024-10-14 04:20:00,178 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 04:20:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 11291 transitions. [2024-10-14 04:20:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 04:20:00,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:00,189 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 04:20:00,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 04:20:00,394 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 04:20:00,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:00,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:00,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1877378954, now seen corresponding path program 1 times [2024-10-14 04:20:00,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:00,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546067752] [2024-10-14 04:20:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:20:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 04:20:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,565 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 04:20:00,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546067752] [2024-10-14 04:20:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546067752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751206848] [2024-10-14 04:20:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:00,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:00,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:00,569 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 04:20:00,570 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 04:20:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:00,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:20:00,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:00,695 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 04:20:00,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751206848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091473652] [2024-10-14 04:20:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:00,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:00,698 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 04:20:01,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:01,375 INFO L93 Difference]: Finished difference Result 16767 states and 25811 transitions. [2024-10-14 04:20:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:01,377 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 04:20:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:01,444 INFO L225 Difference]: With dead ends: 16767 [2024-10-14 04:20:01,444 INFO L226 Difference]: Without dead ends: 11793 [2024-10-14 04:20:01,469 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 04:20:01,471 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 04:20:01,471 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 04:20:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2024-10-14 04:20:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 11793. [2024-10-14 04:20:02,301 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 04:20:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18250 transitions. [2024-10-14 04:20:02,341 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18250 transitions. Word has length 99 [2024-10-14 04:20:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:02,342 INFO L471 AbstractCegarLoop]: Abstraction has 11793 states and 18250 transitions. [2024-10-14 04:20:02,343 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 04:20:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18250 transitions. [2024-10-14 04:20:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-14 04:20:02,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:02,371 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 04:20:02,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 04:20:02,571 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 04:20:02,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:02,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1335572908, now seen corresponding path program 1 times [2024-10-14 04:20:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:02,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401509667] [2024-10-14 04:20:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:20:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-14 04:20:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 04:20:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,713 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 04:20:02,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:02,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401509667] [2024-10-14 04:20:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401509667] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087238193] [2024-10-14 04:20:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:02,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:02,716 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 04:20:02,718 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 04:20:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:02,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:20:02,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:02,941 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 04:20:02,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087238193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:02,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-14 04:20:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304650072] [2024-10-14 04:20:02,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:02,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:02,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:02,944 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 04:20:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:03,864 INFO L93 Difference]: Finished difference Result 30733 states and 46555 transitions. [2024-10-14 04:20:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:03,864 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 04:20:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:03,967 INFO L225 Difference]: With dead ends: 30733 [2024-10-14 04:20:03,967 INFO L226 Difference]: Without dead ends: 21075 [2024-10-14 04:20:04,012 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 04:20:04,013 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 04:20:04,013 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 04:20:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21075 states. [2024-10-14 04:20:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21075 to 20969. [2024-10-14 04:20:04,990 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 04:20:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20969 states to 20969 states and 31594 transitions. [2024-10-14 04:20:05,068 INFO L78 Accepts]: Start accepts. Automaton has 20969 states and 31594 transitions. Word has length 127 [2024-10-14 04:20:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:05,069 INFO L471 AbstractCegarLoop]: Abstraction has 20969 states and 31594 transitions. [2024-10-14 04:20:05,069 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 04:20:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20969 states and 31594 transitions. [2024-10-14 04:20:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 04:20:05,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:05,126 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 04:20:05,143 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 04:20:05,326 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 04:20:05,328 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:05,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:05,328 INFO L85 PathProgramCache]: Analyzing trace with hash 791512030, now seen corresponding path program 1 times [2024-10-14 04:20:05,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:05,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331544515] [2024-10-14 04:20:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:05,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 04:20:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-14 04:20:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:20:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 04:20:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,449 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 04:20:05,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331544515] [2024-10-14 04:20:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331544515] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932616785] [2024-10-14 04:20:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:05,451 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 04:20:05,453 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 04:20:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:05,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:20:05,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:05,628 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 04:20:05,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:05,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932616785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:05,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:05,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:05,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938325308] [2024-10-14 04:20:05,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:05,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:05,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:05,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:05,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:05,630 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 04:20:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:06,805 INFO L93 Difference]: Finished difference Result 33443 states and 50451 transitions. [2024-10-14 04:20:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:06,805 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 04:20:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:06,903 INFO L225 Difference]: With dead ends: 33443 [2024-10-14 04:20:06,904 INFO L226 Difference]: Without dead ends: 18715 [2024-10-14 04:20:06,960 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 04:20:06,961 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 04:20:06,961 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 04:20:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18715 states. [2024-10-14 04:20:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18715 to 14099. [2024-10-14 04:20:07,915 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 04:20:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 20706 transitions. [2024-10-14 04:20:08,183 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 20706 transitions. Word has length 143 [2024-10-14 04:20:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:08,185 INFO L471 AbstractCegarLoop]: Abstraction has 14099 states and 20706 transitions. [2024-10-14 04:20:08,185 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 04:20:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 20706 transitions. [2024-10-14 04:20:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 04:20:08,215 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:08,215 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 04:20:08,233 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 04:20:08,415 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 04:20:08,416 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:08,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:08,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2075302660, now seen corresponding path program 1 times [2024-10-14 04:20:08,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:08,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649151079] [2024-10-14 04:20:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 04:20:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-14 04:20:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:20:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-14 04:20:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,542 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 04:20:08,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:08,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649151079] [2024-10-14 04:20:08,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649151079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:08,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59886002] [2024-10-14 04:20:08,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:08,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:08,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:08,545 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 04:20:08,546 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 04:20:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:08,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 04:20:08,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:08,703 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 04:20:08,703 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59886002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:08,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530161405] [2024-10-14 04:20:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:08,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:08,708 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 04:20:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:09,273 INFO L93 Difference]: Finished difference Result 23244 states and 33469 transitions. [2024-10-14 04:20:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:09,274 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 04:20:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:09,343 INFO L225 Difference]: With dead ends: 23244 [2024-10-14 04:20:09,343 INFO L226 Difference]: Without dead ends: 14923 [2024-10-14 04:20:09,369 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 04:20:09,370 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 04:20:09,370 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 04:20:09,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2024-10-14 04:20:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14857. [2024-10-14 04:20:10,146 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 04:20:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 21484 transitions. [2024-10-14 04:20:10,183 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 21484 transitions. Word has length 143 [2024-10-14 04:20:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:10,184 INFO L471 AbstractCegarLoop]: Abstraction has 14857 states and 21484 transitions. [2024-10-14 04:20:10,184 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 04:20:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 21484 transitions. [2024-10-14 04:20:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 04:20:10,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:10,218 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 04:20:10,236 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 04:20:10,419 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 04:20:10,420 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:10,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1556193784, now seen corresponding path program 1 times [2024-10-14 04:20:10,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955793288] [2024-10-14 04:20:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:10,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:20:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 04:20:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-14 04:20:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-14 04:20:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,552 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 04:20:10,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:10,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955793288] [2024-10-14 04:20:10,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955793288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:10,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495091755] [2024-10-14 04:20:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:10,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:10,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:10,555 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 04:20:10,556 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 04:20:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:10,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:20:10,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:10,689 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 04:20:10,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:10,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495091755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:10,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:10,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133966907] [2024-10-14 04:20:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:10,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:10,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:10,691 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 04:20:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:11,706 INFO L93 Difference]: Finished difference Result 39509 states and 55950 transitions. [2024-10-14 04:20:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:11,706 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 04:20:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:11,816 INFO L225 Difference]: With dead ends: 39509 [2024-10-14 04:20:11,817 INFO L226 Difference]: Without dead ends: 26789 [2024-10-14 04:20:11,855 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 04:20:11,856 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 04:20:11,856 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 04:20:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26789 states. [2024-10-14 04:20:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26789 to 26743. [2024-10-14 04:20:13,644 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 04:20:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26743 states to 26743 states and 38062 transitions. [2024-10-14 04:20:13,737 INFO L78 Accepts]: Start accepts. Automaton has 26743 states and 38062 transitions. Word has length 144 [2024-10-14 04:20:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:13,738 INFO L471 AbstractCegarLoop]: Abstraction has 26743 states and 38062 transitions. [2024-10-14 04:20:13,738 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 04:20:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 26743 states and 38062 transitions. [2024-10-14 04:20:13,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 04:20:13,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:13,789 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 04:20:13,808 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 04:20:13,990 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 04:20:13,991 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:13,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 125794537, now seen corresponding path program 1 times [2024-10-14 04:20:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:13,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809962845] [2024-10-14 04:20:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:20:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 04:20:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:20:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-14 04:20:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,157 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 04:20:14,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:14,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809962845] [2024-10-14 04:20:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809962845] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:14,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053118739] [2024-10-14 04:20:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:14,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:14,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:14,160 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 04:20:14,161 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 04:20:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:14,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:20:14,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:14,358 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 04:20:14,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:14,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053118739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:14,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035841925] [2024-10-14 04:20:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:14,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:14,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:14,362 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 04:20:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:15,912 INFO L93 Difference]: Finished difference Result 52491 states and 75074 transitions. [2024-10-14 04:20:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:15,913 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 04:20:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:16,035 INFO L225 Difference]: With dead ends: 52491 [2024-10-14 04:20:16,036 INFO L226 Difference]: Without dead ends: 27885 [2024-10-14 04:20:16,103 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 04:20:16,104 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 04:20:16,104 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 04:20:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27885 states. [2024-10-14 04:20:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27885 to 27841. [2024-10-14 04:20:17,794 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 04:20:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 38424 transitions. [2024-10-14 04:20:17,870 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 38424 transitions. Word has length 144 [2024-10-14 04:20:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:17,871 INFO L471 AbstractCegarLoop]: Abstraction has 27841 states and 38424 transitions. [2024-10-14 04:20:17,871 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 04:20:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 38424 transitions. [2024-10-14 04:20:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 04:20:17,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:17,910 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 04:20:17,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 04:20:18,110 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 04:20:18,111 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:18,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -782339540, now seen corresponding path program 1 times [2024-10-14 04:20:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895026671] [2024-10-14 04:20:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 04:20:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 04:20:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-14 04:20:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-14 04:20:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,224 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 04:20:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895026671] [2024-10-14 04:20:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895026671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885693608] [2024-10-14 04:20:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:18,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:18,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:18,227 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 04:20:18,228 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 04:20:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:18,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 04:20:18,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:18,354 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 04:20:18,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:18,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885693608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:18,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:18,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115636928] [2024-10-14 04:20:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:18,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:18,356 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 04:20:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:21,335 INFO L93 Difference]: Finished difference Result 75539 states and 103548 transitions. [2024-10-14 04:20:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:21,335 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 04:20:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:21,524 INFO L225 Difference]: With dead ends: 75539 [2024-10-14 04:20:21,525 INFO L226 Difference]: Without dead ends: 49843 [2024-10-14 04:20:21,585 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 04:20:21,586 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 04:20:21,586 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 04:20:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49843 states. [2024-10-14 04:20:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49843 to 49841. [2024-10-14 04:20:24,747 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 04:20:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49841 states to 49841 states and 68436 transitions. [2024-10-14 04:20:24,882 INFO L78 Accepts]: Start accepts. Automaton has 49841 states and 68436 transitions. Word has length 144 [2024-10-14 04:20:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:24,883 INFO L471 AbstractCegarLoop]: Abstraction has 49841 states and 68436 transitions. [2024-10-14 04:20:24,883 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 04:20:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 49841 states and 68436 transitions. [2024-10-14 04:20:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-14 04:20:24,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:24,935 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 04:20:24,951 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 04:20:25,139 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 04:20:25,140 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:25,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash -873894743, now seen corresponding path program 1 times [2024-10-14 04:20:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908084486] [2024-10-14 04:20:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 04:20:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 04:20:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-14 04:20:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-14 04:20:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,263 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 04:20:25,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:25,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908084486] [2024-10-14 04:20:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908084486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:25,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661444700] [2024-10-14 04:20:25,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:25,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:25,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:25,267 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 04:20:25,268 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 04:20:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:25,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 04:20:25,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:25,420 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 04:20:25,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661444700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:25,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850387081] [2024-10-14 04:20:25,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:25,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:25,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:25,425 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 04:20:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:20:28,508 INFO L93 Difference]: Finished difference Result 87149 states and 119166 transitions. [2024-10-14 04:20:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:20:28,509 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 04:20:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:20:28,755 INFO L225 Difference]: With dead ends: 87149 [2024-10-14 04:20:28,755 INFO L226 Difference]: Without dead ends: 51011 [2024-10-14 04:20:28,841 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 04:20:28,842 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 04:20:28,843 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 04:20:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51011 states. [2024-10-14 04:20:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51011 to 49721. [2024-10-14 04:20:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49721 states, 41854 states have (on average 1.324389544607445) internal successors, (55431), 42335 states have internal predecessors, (55431), 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 04:20:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49721 states to 49721 states and 67896 transitions. [2024-10-14 04:20:32,274 INFO L78 Accepts]: Start accepts. Automaton has 49721 states and 67896 transitions. Word has length 145 [2024-10-14 04:20:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:20:32,274 INFO L471 AbstractCegarLoop]: Abstraction has 49721 states and 67896 transitions. [2024-10-14 04:20:32,274 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2024-10-14 04:20:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 49721 states and 67896 transitions. [2024-10-14 04:20:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-14 04:20:32,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:20:32,322 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:20:32,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 04:20:32,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 04:20:32,522 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:20:32,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:20:32,523 INFO L85 PathProgramCache]: Analyzing trace with hash 133090187, now seen corresponding path program 1 times [2024-10-14 04:20:32,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:20:32,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473358042] [2024-10-14 04:20:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:32,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:20:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 04:20:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 04:20:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-14 04:20:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-14 04:20:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 04:20:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 04:20:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-14 04:20:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-14 04:20:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 04:20:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-14 04:20:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-14 04:20:32,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:20:32,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473358042] [2024-10-14 04:20:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473358042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:20:32,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882925766] [2024-10-14 04:20:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:20:32,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:20:32,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:20:32,639 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 04:20:32,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 04:20:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:20:32,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 04:20:32,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:20:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 04:20:32,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:20:32,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882925766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:20:32,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 04:20:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 04:20:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976207926] [2024-10-14 04:20:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:20:32,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:20:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:20:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:20:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 04:20:32,800 INFO L87 Difference]: Start difference. First operand 49721 states and 67896 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (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)