./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_label49+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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_label49+token_ring.02.cil-2.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 454b29c5fe5071d16700d38fede778ad07010669479cf8e19070acab5fe681c9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 23:31:43,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 23:31:44,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 23:31:44,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 23:31:44,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 23:31:44,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 23:31:44,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 23:31:44,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 23:31:44,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 23:31:44,065 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 23:31:44,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 23:31:44,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 23:31:44,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 23:31:44,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 23:31:44,067 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 23:31:44,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 23:31:44,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 23:31:44,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 23:31:44,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 23:31:44,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 23:31:44,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 23:31:44,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 23:31:44,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 23:31:44,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 23:31:44,071 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 23:31:44,071 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 23:31:44,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 23:31:44,072 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 23:31:44,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 23:31:44,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 23:31:44,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 23:31:44,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 23:31:44,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:31:44,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 23:31:44,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 23:31:44,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 23:31:44,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 23:31:44,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 23:31:44,075 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 23:31:44,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 23:31:44,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 23:31:44,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 23:31:44,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454b29c5fe5071d16700d38fede778ad07010669479cf8e19070acab5fe681c9 [2024-11-19 23:31:44,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 23:31:44,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 23:31:44,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 23:31:44,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 23:31:44,372 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 23:31:44,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c [2024-11-19 23:31:45,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 23:31:46,495 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 23:31:46,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c [2024-11-19 23:31:46,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a41955b5d/88bde2108d5a450ea73119abfa8e1989/FLAGefd9ca458 [2024-11-19 23:31:46,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a41955b5d/88bde2108d5a450ea73119abfa8e1989 [2024-11-19 23:31:46,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 23:31:46,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 23:31:46,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 23:31:46,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 23:31:46,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 23:31:46,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:31:46" (1/1) ... [2024-11-19 23:31:46,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243e2d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:46, skipping insertion in model container [2024-11-19 23:31:46,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:31:46" (1/1) ... [2024-11-19 23:31:46,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 23:31:48,479 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[380593,380606] [2024-11-19 23:31:48,504 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[383339,383352] [2024-11-19 23:31:48,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:31:48,643 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 23:31:49,512 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[380593,380606] [2024-11-19 23:31:49,518 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[383339,383352] [2024-11-19 23:31:49,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:31:49,593 INFO L204 MainTranslator]: Completed translation [2024-11-19 23:31:49,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49 WrapperNode [2024-11-19 23:31:49,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 23:31:49,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 23:31:49,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 23:31:49,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 23:31:49,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:49,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,062 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12639 [2024-11-19 23:31:50,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 23:31:50,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 23:31:50,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 23:31:50,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 23:31:50,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,322 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 23:31:50,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 23:31:50,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 23:31:50,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 23:31:50,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 23:31:50,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (1/1) ... [2024-11-19 23:31:50,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:31:50,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:31:50,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 23:31:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 23:31:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 23:31:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-19 23:31:51,013 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-19 23:31:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-19 23:31:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-19 23:31:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-19 23:31:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-19 23:31:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-19 23:31:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-19 23:31:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-19 23:31:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-19 23:31:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-19 23:31:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-19 23:31:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 23:31:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-19 23:31:51,018 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-19 23:31:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 23:31:51,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 23:31:51,158 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 23:31:51,160 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 23:31:59,001 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2024-11-19 23:31:59,002 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 23:31:59,061 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 23:31:59,062 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 23:31:59,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:31:59 BoogieIcfgContainer [2024-11-19 23:31:59,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 23:31:59,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 23:31:59,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 23:31:59,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 23:31:59,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:31:46" (1/3) ... [2024-11-19 23:31:59,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7408de7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:31:59, skipping insertion in model container [2024-11-19 23:31:59,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:31:49" (2/3) ... [2024-11-19 23:31:59,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7408de7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:31:59, skipping insertion in model container [2024-11-19 23:31:59,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:31:59" (3/3) ... [2024-11-19 23:31:59,073 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.02.cil-2.c [2024-11-19 23:31:59,094 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 23:31:59,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 23:31:59,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 23:31:59,225 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;@5b80a81b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 23:31:59,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 23:31:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 23:31:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 23:31:59,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:31:59,255 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:31:59,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:31:59,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:31:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 931332088, now seen corresponding path program 1 times [2024-11-19 23:31:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:31:59,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379507446] [2024-11-19 23:31:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:31:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:31:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:31:59,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:31:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:31:59,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:31:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:31:59,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:31:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:31:59,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:31:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:31:59,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:31:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:31:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:31:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:31:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379507446] [2024-11-19 23:31:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379507446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:31:59,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:31:59,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:31:59,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343388657] [2024-11-19 23:31:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:31:59,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:31:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:31:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:31:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:31:59,884 INFO L87 Difference]: Start difference. First operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:00,909 INFO L93 Difference]: Finished difference Result 4833 states and 8896 transitions. [2024-11-19 23:32:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 23:32:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-19 23:32:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:00,947 INFO L225 Difference]: With dead ends: 4833 [2024-11-19 23:32:00,947 INFO L226 Difference]: Without dead ends: 2447 [2024-11-19 23:32:00,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 23:32:00,963 INFO L432 NwaCegarLoop]: 4156 mSDtfsCounter, 4455 mSDsluCounter, 12455 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:00,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 16611 Invalid, 667 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 23:32:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2024-11-19 23:32:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2382. [2024-11-19 23:32:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2338 states have (on average 1.8319076133447392) internal successors, (4283), 2342 states have internal predecessors, (4283), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-19 23:32:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4342 transitions. [2024-11-19 23:32:01,163 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4342 transitions. Word has length 69 [2024-11-19 23:32:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:01,164 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 4342 transitions. [2024-11-19 23:32:01,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4342 transitions. [2024-11-19 23:32:01,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 23:32:01,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:01,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:01,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 23:32:01,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:01,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1034046452, now seen corresponding path program 1 times [2024-11-19 23:32:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:01,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709651626] [2024-11-19 23:32:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:01,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:01,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:01,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:01,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:01,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:01,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:32:01,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:01,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709651626] [2024-11-19 23:32:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709651626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:01,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:32:01,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:32:01,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719743904] [2024-11-19 23:32:01,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:01,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:32:01,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:01,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:32:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:32:01,508 INFO L87 Difference]: Start difference. First operand 2382 states and 4342 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:02,597 INFO L93 Difference]: Finished difference Result 2853 states and 5045 transitions. [2024-11-19 23:32:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:32:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-19 23:32:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:02,611 INFO L225 Difference]: With dead ends: 2853 [2024-11-19 23:32:02,611 INFO L226 Difference]: Without dead ends: 2602 [2024-11-19 23:32:02,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:32:02,615 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4381 mSDsluCounter, 16537 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 20715 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:02,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4390 Valid, 20715 Invalid, 1014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 23:32:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2024-11-19 23:32:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2499. [2024-11-19 23:32:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2437 states have (on average 1.816988100123102) internal successors, (4428), 2442 states have internal predecessors, (4428), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2024-11-19 23:32:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4511 transitions. [2024-11-19 23:32:02,698 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4511 transitions. Word has length 69 [2024-11-19 23:32:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:02,699 INFO L471 AbstractCegarLoop]: Abstraction has 2499 states and 4511 transitions. [2024-11-19 23:32:02,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4511 transitions. [2024-11-19 23:32:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 23:32:02,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:02,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:02,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 23:32:02,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:02,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1874135434, now seen corresponding path program 1 times [2024-11-19 23:32:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:02,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265482801] [2024-11-19 23:32:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:02,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:02,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:02,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:02,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:02,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:32:02,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265482801] [2024-11-19 23:32:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265482801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:02,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:32:02,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:32:02,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508833109] [2024-11-19 23:32:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:02,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:32:02,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:32:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:32:02,907 INFO L87 Difference]: Start difference. First operand 2499 states and 4511 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:03,846 INFO L93 Difference]: Finished difference Result 3263 states and 5648 transitions. [2024-11-19 23:32:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:32:03,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-19 23:32:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:03,864 INFO L225 Difference]: With dead ends: 3263 [2024-11-19 23:32:03,864 INFO L226 Difference]: Without dead ends: 2895 [2024-11-19 23:32:03,868 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 [2024-11-19 23:32:03,870 INFO L432 NwaCegarLoop]: 4096 mSDtfsCounter, 4421 mSDsluCounter, 16311 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 20407 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:03,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4430 Valid, 20407 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 23:32:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2024-11-19 23:32:03,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2734. [2024-11-19 23:32:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2636 states have (on average 1.7902124430955995) internal successors, (4719), 2643 states have internal predecessors, (4719), 62 states have call successors, (62), 31 states have call predecessors, (62), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2024-11-19 23:32:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4854 transitions. [2024-11-19 23:32:03,971 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4854 transitions. Word has length 69 [2024-11-19 23:32:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:03,972 INFO L471 AbstractCegarLoop]: Abstraction has 2734 states and 4854 transitions. [2024-11-19 23:32:03,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4854 transitions. [2024-11-19 23:32:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 23:32:03,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:03,976 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:03,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 23:32:03,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:03,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash -998116428, now seen corresponding path program 1 times [2024-11-19 23:32:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564384617] [2024-11-19 23:32:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:03,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:04,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:04,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:04,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:04,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:04,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:32:04,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564384617] [2024-11-19 23:32:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564384617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:04,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:32:04,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:32:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723958352] [2024-11-19 23:32:04,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:04,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:32:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:32:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:32:04,138 INFO L87 Difference]: Start difference. First operand 2734 states and 4854 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:05,378 INFO L93 Difference]: Finished difference Result 4155 states and 6957 transitions. [2024-11-19 23:32:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:32:05,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-19 23:32:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:05,400 INFO L225 Difference]: With dead ends: 4155 [2024-11-19 23:32:05,400 INFO L226 Difference]: Without dead ends: 3552 [2024-11-19 23:32:05,405 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 [2024-11-19 23:32:05,406 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4391 mSDsluCounter, 16526 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4399 SdHoareTripleChecker+Valid, 20699 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:05,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4399 Valid, 20699 Invalid, 1107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 23:32:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2024-11-19 23:32:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3158. [2024-11-19 23:32:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 2992 states have (on average 1.7483288770053476) internal successors, (5231), 3003 states have internal predecessors, (5231), 102 states have call successors, (102), 55 states have call predecessors, (102), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2024-11-19 23:32:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 5468 transitions. [2024-11-19 23:32:05,577 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 5468 transitions. Word has length 69 [2024-11-19 23:32:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:05,577 INFO L471 AbstractCegarLoop]: Abstraction has 3158 states and 5468 transitions. [2024-11-19 23:32:05,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 5468 transitions. [2024-11-19 23:32:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 23:32:05,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:05,583 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:05,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 23:32:05,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:05,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 540223602, now seen corresponding path program 1 times [2024-11-19 23:32:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847815773] [2024-11-19 23:32:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:05,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:05,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:05,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:05,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:05,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:32:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847815773] [2024-11-19 23:32:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847815773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:05,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:32:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:32:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231700421] [2024-11-19 23:32:05,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:05,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:32:05,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:32:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:32:05,769 INFO L87 Difference]: Start difference. First operand 3158 states and 5468 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:06,969 INFO L93 Difference]: Finished difference Result 5589 states and 9033 transitions. [2024-11-19 23:32:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:32:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-19 23:32:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:06,995 INFO L225 Difference]: With dead ends: 5589 [2024-11-19 23:32:06,995 INFO L226 Difference]: Without dead ends: 4562 [2024-11-19 23:32:07,002 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 [2024-11-19 23:32:07,003 INFO L432 NwaCegarLoop]: 4174 mSDtfsCounter, 4393 mSDsluCounter, 16529 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 20703 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:07,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4405 Valid, 20703 Invalid, 968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 23:32:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2024-11-19 23:32:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 4039. [2024-11-19 23:32:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4039 states, 3741 states have (on average 1.690724405239241) internal successors, (6325), 3760 states have internal predecessors, (6325), 178 states have call successors, (178), 103 states have call predecessors, (178), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2024-11-19 23:32:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 6776 transitions. [2024-11-19 23:32:07,376 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 6776 transitions. Word has length 69 [2024-11-19 23:32:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:07,377 INFO L471 AbstractCegarLoop]: Abstraction has 4039 states and 6776 transitions. [2024-11-19 23:32:07,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 6776 transitions. [2024-11-19 23:32:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 23:32:07,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:07,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:07,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 23:32:07,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:07,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1488362508, now seen corresponding path program 1 times [2024-11-19 23:32:07,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889883490] [2024-11-19 23:32:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:07,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:07,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:07,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:07,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:07,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:32:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:07,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889883490] [2024-11-19 23:32:07,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889883490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:07,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:32:07,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:32:07,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443752852] [2024-11-19 23:32:07,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:07,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:32:07,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:07,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:32:07,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:32:07,486 INFO L87 Difference]: Start difference. First operand 4039 states and 6776 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:08,404 INFO L93 Difference]: Finished difference Result 7501 states and 11889 transitions. [2024-11-19 23:32:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 23:32:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-19 23:32:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:08,433 INFO L225 Difference]: With dead ends: 7501 [2024-11-19 23:32:08,434 INFO L226 Difference]: Without dead ends: 5594 [2024-11-19 23:32:08,442 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 [2024-11-19 23:32:08,445 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 4523 mSDsluCounter, 12287 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4548 SdHoareTripleChecker+Valid, 16476 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:08,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4548 Valid, 16476 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 23:32:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2024-11-19 23:32:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5007. [2024-11-19 23:32:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5007 states, 4551 states have (on average 1.6381015161502965) internal successors, (7455), 4587 states have internal predecessors, (7455), 274 states have call successors, (274), 157 states have call predecessors, (274), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2024-11-19 23:32:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5007 states to 5007 states and 8126 transitions. [2024-11-19 23:32:08,671 INFO L78 Accepts]: Start accepts. Automaton has 5007 states and 8126 transitions. Word has length 69 [2024-11-19 23:32:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:08,671 INFO L471 AbstractCegarLoop]: Abstraction has 5007 states and 8126 transitions. [2024-11-19 23:32:08,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:32:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5007 states and 8126 transitions. [2024-11-19 23:32:08,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 23:32:08,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:08,683 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:08,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 23:32:08,685 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:08,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1912897413, now seen corresponding path program 1 times [2024-11-19 23:32:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:08,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376164036] [2024-11-19 23:32:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:32:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-19 23:32:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:32:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376164036] [2024-11-19 23:32:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376164036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302504077] [2024-11-19 23:32:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:08,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:08,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:08,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:08,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 23:32:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:08,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:08,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 23:32:09,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:09,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302504077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:09,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:09,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:32:09,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819906976] [2024-11-19 23:32:09,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:09,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:09,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:09,073 INFO L87 Difference]: Start difference. First operand 5007 states and 8126 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:32:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:09,468 INFO L93 Difference]: Finished difference Result 10614 states and 16300 transitions. [2024-11-19 23:32:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:09,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2024-11-19 23:32:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:09,518 INFO L225 Difference]: With dead ends: 10614 [2024-11-19 23:32:09,518 INFO L226 Difference]: Without dead ends: 7739 [2024-11-19 23:32:09,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:09,531 INFO L432 NwaCegarLoop]: 4154 mSDtfsCounter, 4113 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4113 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:09,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4113 Valid, 4328 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7739 states. [2024-11-19 23:32:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7739 to 7683. [2024-11-19 23:32:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 6813 states have (on average 1.5708204902392484) internal successors, (10702), 6882 states have internal predecessors, (10702), 512 states have call successors, (512), 309 states have call predecessors, (512), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2024-11-19 23:32:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 11959 transitions. [2024-11-19 23:32:09,876 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 11959 transitions. Word has length 112 [2024-11-19 23:32:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:09,876 INFO L471 AbstractCegarLoop]: Abstraction has 7683 states and 11959 transitions. [2024-11-19 23:32:09,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:32:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 11959 transitions. [2024-11-19 23:32:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 23:32:09,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:09,887 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:09,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 23:32:10,088 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 [2024-11-19 23:32:10,088 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:10,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash 482611867, now seen corresponding path program 1 times [2024-11-19 23:32:10,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:10,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939824796] [2024-11-19 23:32:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:10,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:32:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-19 23:32:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:32:10,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939824796] [2024-11-19 23:32:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939824796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650495500] [2024-11-19 23:32:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:10,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:10,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:10,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:10,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 23:32:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:10,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:10,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 23:32:10,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650495500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:10,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:10,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:10,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780951943] [2024-11-19 23:32:10,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:10,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:10,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:10,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:10,361 INFO L87 Difference]: Start difference. First operand 7683 states and 11959 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 23:32:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:10,779 INFO L93 Difference]: Finished difference Result 18369 states and 27593 transitions. [2024-11-19 23:32:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2024-11-19 23:32:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:10,931 INFO L225 Difference]: With dead ends: 18369 [2024-11-19 23:32:10,932 INFO L226 Difference]: Without dead ends: 12819 [2024-11-19 23:32:10,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:10,949 INFO L432 NwaCegarLoop]: 4317 mSDtfsCounter, 156 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8470 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:10,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8470 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12819 states. [2024-11-19 23:32:11,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12819 to 12819. [2024-11-19 23:32:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12819 states, 11136 states have (on average 1.5079920977011494) internal successors, (16793), 11254 states have internal predecessors, (16793), 977 states have call successors, (977), 609 states have call predecessors, (977), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2024-11-19 23:32:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 19366 transitions. [2024-11-19 23:32:11,567 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 19366 transitions. Word has length 112 [2024-11-19 23:32:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:11,570 INFO L471 AbstractCegarLoop]: Abstraction has 12819 states and 19366 transitions. [2024-11-19 23:32:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 23:32:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 19366 transitions. [2024-11-19 23:32:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-19 23:32:11,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:11,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:11,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 23:32:11,805 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 [2024-11-19 23:32:11,805 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:11,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 918900513, now seen corresponding path program 1 times [2024-11-19 23:32:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656262532] [2024-11-19 23:32:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:32:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 23:32:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-19 23:32:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-19 23:32:11,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:11,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656262532] [2024-11-19 23:32:11,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656262532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:11,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812768395] [2024-11-19 23:32:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:11,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:11,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:11,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:11,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 23:32:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:12,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:12,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 23:32:12,207 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:12,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812768395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:12,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:12,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:32:12,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498113190] [2024-11-19 23:32:12,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:12,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:12,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:12,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:12,209 INFO L87 Difference]: Start difference. First operand 12819 states and 19366 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-19 23:32:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:13,313 INFO L93 Difference]: Finished difference Result 33751 states and 49843 transitions. [2024-11-19 23:32:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 145 [2024-11-19 23:32:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:13,439 INFO L225 Difference]: With dead ends: 33751 [2024-11-19 23:32:13,440 INFO L226 Difference]: Without dead ends: 23069 [2024-11-19 23:32:13,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:13,497 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 4070 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4070 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:13,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4070 Valid, 4349 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23069 states. [2024-11-19 23:32:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23069 to 22857. [2024-11-19 23:32:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22857 states, 19594 states have (on average 1.4674390119424314) internal successors, (28753), 19826 states have internal predecessors, (28753), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2024-11-19 23:32:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22857 states to 22857 states and 33662 transitions. [2024-11-19 23:32:14,601 INFO L78 Accepts]: Start accepts. Automaton has 22857 states and 33662 transitions. Word has length 145 [2024-11-19 23:32:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:14,602 INFO L471 AbstractCegarLoop]: Abstraction has 22857 states and 33662 transitions. [2024-11-19 23:32:14,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-19 23:32:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22857 states and 33662 transitions. [2024-11-19 23:32:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 23:32:14,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:14,660 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, 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, 1, 1, 1, 1] [2024-11-19 23:32:14,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 23:32:14,860 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 [2024-11-19 23:32:14,861 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:14,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash -714352319, now seen corresponding path program 1 times [2024-11-19 23:32:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:14,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375454948] [2024-11-19 23:32:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:14,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:14,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:14,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 23:32:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 23:32:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-19 23:32:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-19 23:32:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 23:32:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375454948] [2024-11-19 23:32:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375454948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597128271] [2024-11-19 23:32:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:15,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:15,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 23:32:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:15,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:15,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 23:32:15,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:15,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597128271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:15,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101658790] [2024-11-19 23:32:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:15,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:15,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:15,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:15,262 INFO L87 Difference]: Start difference. First operand 22857 states and 33662 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-11-19 23:32:16,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:16,303 INFO L93 Difference]: Finished difference Result 45933 states and 67620 transitions. [2024-11-19 23:32:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:16,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 163 [2024-11-19 23:32:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:16,409 INFO L225 Difference]: With dead ends: 45933 [2024-11-19 23:32:16,410 INFO L226 Difference]: Without dead ends: 25211 [2024-11-19 23:32:16,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:16,471 INFO L432 NwaCegarLoop]: 4151 mSDtfsCounter, 4088 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:16,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4185 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2024-11-19 23:32:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 25211. [2024-11-19 23:32:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25211 states, 21736 states have (on average 1.4132775119617225) internal successors, (30719), 21968 states have internal predecessors, (30719), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2024-11-19 23:32:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25211 states to 25211 states and 35750 transitions. [2024-11-19 23:32:17,769 INFO L78 Accepts]: Start accepts. Automaton has 25211 states and 35750 transitions. Word has length 163 [2024-11-19 23:32:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:17,769 INFO L471 AbstractCegarLoop]: Abstraction has 25211 states and 35750 transitions. [2024-11-19 23:32:17,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-11-19 23:32:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 25211 states and 35750 transitions. [2024-11-19 23:32:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 23:32:17,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:17,823 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, 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, 1, 1, 1, 1] [2024-11-19 23:32:17,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 23:32:18,027 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 [2024-11-19 23:32:18,027 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:18,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash -537824700, now seen corresponding path program 1 times [2024-11-19 23:32:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579865244] [2024-11-19 23:32:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 23:32:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 23:32:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-19 23:32:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-19 23:32:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-19 23:32:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579865244] [2024-11-19 23:32:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579865244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2909078] [2024-11-19 23:32:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:18,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:18,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:18,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 23:32:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:18,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 23:32:18,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-19 23:32:18,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2909078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44202626] [2024-11-19 23:32:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:18,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:18,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:18,331 INFO L87 Difference]: Start difference. First operand 25211 states and 35750 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:32:20,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:20,068 INFO L93 Difference]: Finished difference Result 42664 states and 59708 transitions. [2024-11-19 23:32:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:20,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 163 [2024-11-19 23:32:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:20,164 INFO L225 Difference]: With dead ends: 42664 [2024-11-19 23:32:20,164 INFO L226 Difference]: Without dead ends: 26751 [2024-11-19 23:32:20,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:20,200 INFO L432 NwaCegarLoop]: 4191 mSDtfsCounter, 4088 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4372 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:20,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4372 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26751 states. [2024-11-19 23:32:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26751 to 26611. [2024-11-19 23:32:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26611 states, 23024 states have (on average 1.3892894371091036) internal successors, (31987), 23256 states have internal predecessors, (31987), 1945 states have call successors, (1945), 1449 states have call predecessors, (1945), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2024-11-19 23:32:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26611 states to 26611 states and 37150 transitions. [2024-11-19 23:32:21,679 INFO L78 Accepts]: Start accepts. Automaton has 26611 states and 37150 transitions. Word has length 163 [2024-11-19 23:32:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:21,680 INFO L471 AbstractCegarLoop]: Abstraction has 26611 states and 37150 transitions. [2024-11-19 23:32:21,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:32:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 26611 states and 37150 transitions. [2024-11-19 23:32:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 23:32:21,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:21,723 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:21,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 23:32:21,923 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 [2024-11-19 23:32:21,924 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:21,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1975898858, now seen corresponding path program 1 times [2024-11-19 23:32:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:21,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039833653] [2024-11-19 23:32:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:21,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:32:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 23:32:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-19 23:32:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-19 23:32:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-19 23:32:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039833653] [2024-11-19 23:32:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039833653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132363749] [2024-11-19 23:32:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:22,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:22,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:22,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:22,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 23:32:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:22,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:22,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 23:32:22,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:22,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132363749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:22,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:22,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215833920] [2024-11-19 23:32:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:22,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:22,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:22,225 INFO L87 Difference]: Start difference. First operand 26611 states and 37150 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:32:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:24,566 INFO L93 Difference]: Finished difference Result 74229 states and 102672 transitions. [2024-11-19 23:32:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:24,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2024-11-19 23:32:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:24,800 INFO L225 Difference]: With dead ends: 74229 [2024-11-19 23:32:24,800 INFO L226 Difference]: Without dead ends: 49757 [2024-11-19 23:32:24,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:24,862 INFO L432 NwaCegarLoop]: 4323 mSDtfsCounter, 165 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 8471 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:24,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 8471 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49757 states. [2024-11-19 23:32:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49757 to 49713. [2024-11-19 23:32:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49713 states, 42712 states have (on average 1.3571127551976025) internal successors, (57965), 43174 states have internal predecessors, (57965), 3775 states have call successors, (3775), 2841 states have call predecessors, (3775), 3224 states have return successors, (7134), 3761 states have call predecessors, (7134), 3773 states have call successors, (7134) [2024-11-19 23:32:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49713 states to 49713 states and 68874 transitions. [2024-11-19 23:32:28,024 INFO L78 Accepts]: Start accepts. Automaton has 49713 states and 68874 transitions. Word has length 164 [2024-11-19 23:32:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:28,025 INFO L471 AbstractCegarLoop]: Abstraction has 49713 states and 68874 transitions. [2024-11-19 23:32:28,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:32:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 49713 states and 68874 transitions. [2024-11-19 23:32:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 23:32:28,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:28,122 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:28,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 23:32:28,322 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 [2024-11-19 23:32:28,323 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:28,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1305873783, now seen corresponding path program 1 times [2024-11-19 23:32:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979234898] [2024-11-19 23:32:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:32:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 23:32:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-19 23:32:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-19 23:32:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-19 23:32:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979234898] [2024-11-19 23:32:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979234898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366017854] [2024-11-19 23:32:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:28,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:28,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:28,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 23:32:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:28,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:28,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 23:32:28,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:28,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366017854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:28,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:28,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:28,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860299762] [2024-11-19 23:32:28,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:28,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:28,699 INFO L87 Difference]: Start difference. First operand 49713 states and 68874 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 23:32:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:30,874 INFO L93 Difference]: Finished difference Result 80681 states and 113133 transitions. [2024-11-19 23:32:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:30,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 164 [2024-11-19 23:32:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:31,101 INFO L225 Difference]: With dead ends: 80681 [2024-11-19 23:32:31,101 INFO L226 Difference]: Without dead ends: 42357 [2024-11-19 23:32:31,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:31,217 INFO L432 NwaCegarLoop]: 4148 mSDtfsCounter, 4083 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:31,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 4181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42357 states. [2024-11-19 23:32:33,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42357 to 30885. [2024-11-19 23:32:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30885 states, 26708 states have (on average 1.3355174479556686) internal successors, (35669), 26950 states have internal predecessors, (35669), 2255 states have call successors, (2255), 1729 states have call predecessors, (2255), 1920 states have return successors, (3778), 2237 states have call predecessors, (3778), 2253 states have call successors, (3778) [2024-11-19 23:32:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30885 states to 30885 states and 41702 transitions. [2024-11-19 23:32:33,327 INFO L78 Accepts]: Start accepts. Automaton has 30885 states and 41702 transitions. Word has length 164 [2024-11-19 23:32:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:33,328 INFO L471 AbstractCegarLoop]: Abstraction has 30885 states and 41702 transitions. [2024-11-19 23:32:33,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 23:32:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30885 states and 41702 transitions. [2024-11-19 23:32:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 23:32:33,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:33,372 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:32:33,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 23:32:33,575 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 [2024-11-19 23:32:33,576 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:33,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 916086420, now seen corresponding path program 1 times [2024-11-19 23:32:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:33,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34734762] [2024-11-19 23:32:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:32:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 23:32:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-19 23:32:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-19 23:32:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 23:32:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34734762] [2024-11-19 23:32:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34734762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352358090] [2024-11-19 23:32:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:33,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:33,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:33,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:33,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 23:32:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:33,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:32:33,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 23:32:33,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352358090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:33,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:33,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:33,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367042940] [2024-11-19 23:32:33,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:33,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:33,893 INFO L87 Difference]: Start difference. First operand 30885 states and 41702 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:32:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:36,815 INFO L93 Difference]: Finished difference Result 83833 states and 112514 transitions. [2024-11-19 23:32:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2024-11-19 23:32:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:37,043 INFO L225 Difference]: With dead ends: 83833 [2024-11-19 23:32:37,043 INFO L226 Difference]: Without dead ends: 55097 [2024-11-19 23:32:37,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:37,104 INFO L432 NwaCegarLoop]: 4317 mSDtfsCounter, 152 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:37,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 8461 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55097 states. [2024-11-19 23:32:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55097 to 55093. [2024-11-19 23:32:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55093 states, 47224 states have (on average 1.3057131966796545) internal successors, (61661), 47706 states have internal predecessors, (61661), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-11-19 23:32:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55093 states to 55093 states and 74128 transitions. [2024-11-19 23:32:40,306 INFO L78 Accepts]: Start accepts. Automaton has 55093 states and 74128 transitions. Word has length 164 [2024-11-19 23:32:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:32:40,307 INFO L471 AbstractCegarLoop]: Abstraction has 55093 states and 74128 transitions. [2024-11-19 23:32:40,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:32:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 55093 states and 74128 transitions. [2024-11-19 23:32:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-19 23:32:40,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:32:40,371 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, 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, 1, 1, 1] [2024-11-19 23:32:40,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 23:32:40,572 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 [2024-11-19 23:32:40,572 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:32:40,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:32:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2132347491, now seen corresponding path program 1 times [2024-11-19 23:32:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:32:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024141871] [2024-11-19 23:32:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:32:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:32:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:32:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:32:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:32:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:32:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-19 23:32:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-19 23:32:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-19 23:32:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:32:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-19 23:32:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-19 23:32:40,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:32:40,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024141871] [2024-11-19 23:32:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024141871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:32:40,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434519453] [2024-11-19 23:32:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:32:40,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:32:40,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:32:40,726 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:32:40,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 23:32:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:32:40,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 23:32:40,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:32:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 23:32:40,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:32:40,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434519453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:32:40,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:32:40,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:32:40,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849839633] [2024-11-19 23:32:40,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:32:40,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:32:40,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:32:40,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:32:40,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:40,885 INFO L87 Difference]: Start difference. First operand 55093 states and 74128 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:32:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:32:43,810 INFO L93 Difference]: Finished difference Result 96925 states and 129738 transitions. [2024-11-19 23:32:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:32:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2024-11-19 23:32:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:32:44,061 INFO L225 Difference]: With dead ends: 96925 [2024-11-19 23:32:44,061 INFO L226 Difference]: Without dead ends: 55937 [2024-11-19 23:32:44,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:32:44,143 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4108 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:32:44,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4352 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:32:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55937 states.