./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i --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/array-examples/standard_partition_ground-1.i -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 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:37:11,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:37:11,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:37:11,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:37:11,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:37:11,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:37:11,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:37:11,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:37:11,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:37:11,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:37:11,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:37:11,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:37:11,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:37:11,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:37:11,859 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:37:11,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:37:11,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:37:11,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:37:11,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:37:11,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:37:11,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:37:11,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:37:11,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:37:11,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:37:11,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:37:11,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:37:11,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:37:11,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:37:11,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:37:11,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:37:11,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:37:11,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:37:11,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:37:11,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:37:11,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:37:11,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:37:11,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:37:11,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:37:11,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:37:11,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:37:11,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:37:11,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:37:11,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 [2024-11-19 16:37:12,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:37:12,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:37:12,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:37:12,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:37:12,195 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:37:12,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2024-11-19 16:37:13,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:37:13,968 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:37:13,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2024-11-19 16:37:13,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a31d323d/236556808626453091d1b058b0a92510/FLAGa113e07c4 [2024-11-19 16:37:14,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a31d323d/236556808626453091d1b058b0a92510 [2024-11-19 16:37:14,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:37:14,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:37:14,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:37:14,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:37:14,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:37:14,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4985ea18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14, skipping insertion in model container [2024-11-19 16:37:14,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,392 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:37:14,574 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/array-examples/standard_partition_ground-1.i[860,873] [2024-11-19 16:37:14,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:37:14,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:37:14,612 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/array-examples/standard_partition_ground-1.i[860,873] [2024-11-19 16:37:14,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:37:14,641 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:37:14,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14 WrapperNode [2024-11-19 16:37:14,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:37:14,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:37:14,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:37:14,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:37:14,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,678 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2024-11-19 16:37:14,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:37:14,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:37:14,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:37:14,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:37:14,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,707 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 2, 2, 5]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-19 16:37:14,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:37:14,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:37:14,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:37:14,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:37:14,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (1/1) ... [2024-11-19 16:37:14,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:37:14,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:14,763 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 16:37:14,765 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 16:37:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:37:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:37:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:37:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 16:37:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 16:37:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:37:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:37:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:37:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 16:37:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 16:37:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:37:14,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:37:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:37:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:37:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 16:37:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 16:37:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 16:37:14,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 16:37:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:37:14,888 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:37:14,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:37:15,050 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-19 16:37:15,050 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:37:15,061 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:37:15,061 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 16:37:15,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:15 BoogieIcfgContainer [2024-11-19 16:37:15,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:37:15,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:37:15,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:37:15,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:37:15,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:37:14" (1/3) ... [2024-11-19 16:37:15,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b743b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:15, skipping insertion in model container [2024-11-19 16:37:15,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:14" (2/3) ... [2024-11-19 16:37:15,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b743b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:15, skipping insertion in model container [2024-11-19 16:37:15,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:15" (3/3) ... [2024-11-19 16:37:15,070 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2024-11-19 16:37:15,086 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:37:15,086 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:37:15,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:37:15,147 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;@3cea14d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:37:15,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:37:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 16:37:15,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:15,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:15,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:15,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 25564738, now seen corresponding path program 1 times [2024-11-19 16:37:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:15,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883577885] [2024-11-19 16:37:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:15,349 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 16:37:15,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:15,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883577885] [2024-11-19 16:37:15,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883577885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:37:15,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:37:15,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 16:37:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091934707] [2024-11-19 16:37:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:37:15,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 16:37:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:15,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 16:37:15,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:37:15,379 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:15,395 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2024-11-19 16:37:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 16:37:15,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 16:37:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:15,403 INFO L225 Difference]: With dead ends: 53 [2024-11-19 16:37:15,403 INFO L226 Difference]: Without dead ends: 25 [2024-11-19 16:37:15,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:37:15,409 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:15,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:37:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-19 16:37:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-19 16:37:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-19 16:37:15,439 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2024-11-19 16:37:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:15,440 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-19 16:37:15,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-19 16:37:15,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 16:37:15,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:15,441 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:15,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:37:15,442 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:15,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1555088748, now seen corresponding path program 1 times [2024-11-19 16:37:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:15,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535252078] [2024-11-19 16:37:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:15,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:15,543 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 16:37:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535252078] [2024-11-19 16:37:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535252078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:37:15,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:37:15,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:37:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563864057] [2024-11-19 16:37:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:37:15,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:37:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:37:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:37:15,547 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:15,596 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2024-11-19 16:37:15,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:37:15,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 16:37:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:15,600 INFO L225 Difference]: With dead ends: 51 [2024-11-19 16:37:15,600 INFO L226 Difference]: Without dead ends: 31 [2024-11-19 16:37:15,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:37:15,601 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:15,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:37:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-19 16:37:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-11-19 16:37:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-19 16:37:15,616 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 11 [2024-11-19 16:37:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:15,616 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-19 16:37:15,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-19 16:37:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 16:37:15,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:15,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:15,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 16:37:15,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:15,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1378811952, now seen corresponding path program 1 times [2024-11-19 16:37:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:15,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091787914] [2024-11-19 16:37:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:15,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:37:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091787914] [2024-11-19 16:37:15,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091787914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:37:15,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59979699] [2024-11-19 16:37:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:15,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:15,789 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 16:37:15,791 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 16:37:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:15,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 16:37:15,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:37:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:37:15,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:37:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:37:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59979699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:37:16,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:37:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 16:37:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638664677] [2024-11-19 16:37:16,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:37:16,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 16:37:16,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:16,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 16:37:16,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:37:16,019 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:16,113 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-11-19 16:37:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 16:37:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 16:37:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:16,115 INFO L225 Difference]: With dead ends: 66 [2024-11-19 16:37:16,115 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 16:37:16,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:37:16,117 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:16,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 90 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:37:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 16:37:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-19 16:37:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-19 16:37:16,131 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 17 [2024-11-19 16:37:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:16,132 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-19 16:37:16,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-19 16:37:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 16:37:16,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:16,133 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:16,141 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 16:37:16,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:16,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:16,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1056905748, now seen corresponding path program 2 times [2024-11-19 16:37:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449583862] [2024-11-19 16:37:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-19 16:37:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449583862] [2024-11-19 16:37:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449583862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:37:16,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:37:16,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 16:37:16,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423311803] [2024-11-19 16:37:16,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:37:16,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 16:37:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:16,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 16:37:16,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:37:16,575 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:16,600 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2024-11-19 16:37:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 16:37:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-19 16:37:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:16,602 INFO L225 Difference]: With dead ends: 87 [2024-11-19 16:37:16,602 INFO L226 Difference]: Without dead ends: 72 [2024-11-19 16:37:16,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:37:16,603 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:16,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:37:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-19 16:37:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-19 16:37:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 68 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2024-11-19 16:37:16,622 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 35 [2024-11-19 16:37:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:16,622 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2024-11-19 16:37:16,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2024-11-19 16:37:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 16:37:16,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:16,625 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:16,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 16:37:16,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:16,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash 748532586, now seen corresponding path program 1 times [2024-11-19 16:37:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:16,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274579122] [2024-11-19 16:37:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 16:37:16,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:16,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274579122] [2024-11-19 16:37:16,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274579122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:37:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234164450] [2024-11-19 16:37:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:16,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:16,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:16,848 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 16:37:16,851 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 16:37:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:16,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:37:16,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:37:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 16:37:17,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:37:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 16:37:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234164450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:37:17,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:37:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 16:37:17,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392354105] [2024-11-19 16:37:17,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:37:17,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 16:37:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:17,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 16:37:17,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:37:17,102 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:17,269 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2024-11-19 16:37:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 16:37:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-19 16:37:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:17,271 INFO L225 Difference]: With dead ends: 190 [2024-11-19 16:37:17,271 INFO L226 Difference]: Without dead ends: 144 [2024-11-19 16:37:17,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:37:17,273 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:17,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 121 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:37:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-19 16:37:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-19 16:37:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.3214285714285714) internal successors, (185), 140 states have internal predecessors, (185), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 189 transitions. [2024-11-19 16:37:17,291 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 189 transitions. Word has length 35 [2024-11-19 16:37:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:17,292 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 189 transitions. [2024-11-19 16:37:17,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 189 transitions. [2024-11-19 16:37:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 16:37:17,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:17,296 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:17,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 16:37:17,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:17,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:17,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash -737484630, now seen corresponding path program 2 times [2024-11-19 16:37:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000680746] [2024-11-19 16:37:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:17,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 16:37:17,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:17,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000680746] [2024-11-19 16:37:17,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000680746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:37:17,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863346386] [2024-11-19 16:37:17,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:37:17,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:17,908 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 16:37:17,910 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 16:37:18,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:37:18,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:37:18,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 16:37:18,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:37:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 16:37:18,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:37:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 16:37:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863346386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:37:18,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:37:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 16:37:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049486437] [2024-11-19 16:37:18,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:37:18,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 16:37:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:18,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 16:37:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 16:37:18,393 INFO L87 Difference]: Start difference. First operand 144 states and 189 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:18,673 INFO L93 Difference]: Finished difference Result 370 states and 535 transitions. [2024-11-19 16:37:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 16:37:18,674 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-19 16:37:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:18,675 INFO L225 Difference]: With dead ends: 370 [2024-11-19 16:37:18,676 INFO L226 Difference]: Without dead ends: 288 [2024-11-19 16:37:18,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 16:37:18,677 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 323 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:18,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 126 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 16:37:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-19 16:37:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-19 16:37:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 284 states have (on average 1.3274647887323943) internal successors, (377), 284 states have internal predecessors, (377), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 16:37:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 381 transitions. [2024-11-19 16:37:18,698 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 381 transitions. Word has length 71 [2024-11-19 16:37:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:18,698 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 381 transitions. [2024-11-19 16:37:18,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 381 transitions. [2024-11-19 16:37:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 16:37:18,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:18,709 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:18,720 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 16:37:18,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:18,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:18,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1759255338, now seen corresponding path program 3 times [2024-11-19 16:37:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448413427] [2024-11-19 16:37:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-19 16:37:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448413427] [2024-11-19 16:37:19,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448413427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:37:19,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613684463] [2024-11-19 16:37:19,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:37:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:19,848 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 16:37:19,850 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 16:37:19,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:37:19,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:37:19,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 16:37:19,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:37:20,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 16:37:20,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-19 16:37:20,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 16:37:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-11-19 16:37:20,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:37:20,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 16:37:20,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 16:37:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-11-19 16:37:20,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613684463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:37:20,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:37:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 34 [2024-11-19 16:37:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722775529] [2024-11-19 16:37:20,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:37:20,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 16:37:20,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 16:37:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 16:37:20,756 INFO L87 Difference]: Start difference. First operand 288 states and 381 transitions. Second operand has 34 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:22,902 INFO L93 Difference]: Finished difference Result 624 states and 833 transitions. [2024-11-19 16:37:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-19 16:37:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-19 16:37:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:22,907 INFO L225 Difference]: With dead ends: 624 [2024-11-19 16:37:22,910 INFO L226 Difference]: Without dead ends: 470 [2024-11-19 16:37:22,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 273 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3094 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2448, Invalid=8472, Unknown=0, NotChecked=0, Total=10920 [2024-11-19 16:37:22,919 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 928 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:22,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 287 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 16:37:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-19 16:37:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 443. [2024-11-19 16:37:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 437 states have (on average 1.3295194508009154) internal successors, (581), 438 states have internal predecessors, (581), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:37:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 587 transitions. [2024-11-19 16:37:22,958 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 587 transitions. Word has length 143 [2024-11-19 16:37:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:22,958 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 587 transitions. [2024-11-19 16:37:22,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 587 transitions. [2024-11-19 16:37:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-19 16:37:22,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:22,961 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:22,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 16:37:23,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:23,161 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:23,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:23,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1079428432, now seen corresponding path program 4 times [2024-11-19 16:37:23,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:23,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522510054] [2024-11-19 16:37:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-11-19 16:37:24,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:24,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522510054] [2024-11-19 16:37:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522510054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:37:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670592571] [2024-11-19 16:37:24,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:37:24,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:24,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:24,073 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 16:37:24,075 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 16:37:24,427 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:37:24,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:37:24,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 16:37:24,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:37:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-11-19 16:37:24,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:37:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-11-19 16:37:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670592571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:37:25,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:37:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-19 16:37:25,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070586747] [2024-11-19 16:37:25,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:37:25,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 16:37:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:37:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 16:37:25,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 16:37:25,294 INFO L87 Difference]: Start difference. First operand 443 states and 587 transitions. Second operand has 51 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 51 states have internal predecessors, (157), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:37:25,849 INFO L93 Difference]: Finished difference Result 1131 states and 1650 transitions. [2024-11-19 16:37:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-19 16:37:25,850 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 51 states have internal predecessors, (157), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-19 16:37:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:37:25,855 INFO L225 Difference]: With dead ends: 1131 [2024-11-19 16:37:25,856 INFO L226 Difference]: Without dead ends: 893 [2024-11-19 16:37:25,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 16:37:25,857 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 581 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 16:37:25,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 235 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 16:37:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-11-19 16:37:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 893. [2024-11-19 16:37:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 887 states have (on average 1.3314543404735062) internal successors, (1181), 888 states have internal predecessors, (1181), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:37:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1187 transitions. [2024-11-19 16:37:25,883 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1187 transitions. Word has length 149 [2024-11-19 16:37:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:37:25,884 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1187 transitions. [2024-11-19 16:37:25,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 51 states have internal predecessors, (157), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:37:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1187 transitions. [2024-11-19 16:37:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-19 16:37:25,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:37:25,888 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 48, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:37:25,899 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 16:37:26,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:26,089 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:37:26,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:37:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2105594540, now seen corresponding path program 5 times [2024-11-19 16:37:26,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:37:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928248567] [2024-11-19 16:37:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:37:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:37:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:37:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 3432 trivial. 0 not checked. [2024-11-19 16:37:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:37:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928248567] [2024-11-19 16:37:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928248567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:37:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901855070] [2024-11-19 16:37:28,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:37:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:37:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:37:28,916 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 16:37:28,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process