./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-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 ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 16:06:52,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 16:06:52,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 16:06:52,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 16:06:52,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 16:06:52,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 16:06:52,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 16:06:52,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 16:06:52,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 16:06:52,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 16:06:52,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 16:06:52,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 16:06:52,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 16:06:52,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 16:06:52,418 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 16:06:52,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 16:06:52,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 16:06:52,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 16:06:52,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 16:06:52,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 16:06:52,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 16:06:52,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 16:06:52,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 16:06:52,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 16:06:52,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 16:06:52,421 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 16:06:52,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 16:06:52,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 16:06:52,422 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 16:06:52,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 16:06:52,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 16:06:52,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 16:06:52,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:06:52,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 16:06:52,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 16:06:52,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 16:06:52,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 16:06:52,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 16:06:52,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 16:06:52,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 16:06:52,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 16:06:52,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 16:06:52,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecbd2e76b09c20f709f57c97db51ca614252d67d1b8bd7f07a2fbe2befdf8756 [2024-11-16 16:06:52,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 16:06:52,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 16:06:52,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 16:06:52,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 16:06:52,640 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 16:06:52,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2024-11-16 16:06:53,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 16:06:53,996 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 16:06:53,997 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i [2024-11-16 16:06:54,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46808dc83/4baa2d60b5764530b3edbfb2f00a2ccb/FLAG9d623eefb [2024-11-16 16:06:54,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46808dc83/4baa2d60b5764530b3edbfb2f00a2ccb [2024-11-16 16:06:54,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 16:06:54,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 16:06:54,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 16:06:54,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 16:06:54,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 16:06:54,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc9f65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54, skipping insertion in model container [2024-11-16 16:06:54,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,432 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 16:06:54,552 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2024-11-16 16:06:54,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:06:54,642 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 16:06:54,653 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-1.i[915,928] [2024-11-16 16:06:54,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:06:54,722 INFO L204 MainTranslator]: Completed translation [2024-11-16 16:06:54,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54 WrapperNode [2024-11-16 16:06:54,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 16:06:54,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 16:06:54,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 16:06:54,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 16:06:54,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,808 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2024-11-16 16:06:54,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 16:06:54,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 16:06:54,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 16:06:54,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 16:06:54,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,852 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 16:06:54,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,868 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 16:06:54,881 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 16:06:54,881 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 16:06:54,882 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 16:06:54,882 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (1/1) ... [2024-11-16 16:06:54,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:06:54,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:06:54,908 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) [2024-11-16 16:06:54,912 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 [2024-11-16 16:06:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 16:06:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 16:06:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 16:06:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 16:06:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 16:06:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 16:06:55,016 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 16:06:55,018 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 16:06:55,383 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L196: havoc property_#t~ite28#1;havoc property_#t~bitwise26#1;havoc property_#t~bitwise27#1; [2024-11-16 16:06:55,420 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-16 16:06:55,421 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 16:06:55,442 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 16:06:55,443 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 16:06:55,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:55 BoogieIcfgContainer [2024-11-16 16:06:55,443 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 16:06:55,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 16:06:55,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 16:06:55,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 16:06:55,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:06:54" (1/3) ... [2024-11-16 16:06:55,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68836776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:55, skipping insertion in model container [2024-11-16 16:06:55,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:54" (2/3) ... [2024-11-16 16:06:55,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68836776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:55, skipping insertion in model container [2024-11-16 16:06:55,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:55" (3/3) ... [2024-11-16 16:06:55,452 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-1.i [2024-11-16 16:06:55,465 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 16:06:55,466 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 16:06:55,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 16:06:55,526 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;@1478e1a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 16:06:55,526 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 16:06:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 84 states have internal predecessors, (120), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-16 16:06:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-16 16:06:55,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:06:55,545 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:06:55,545 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:06:55,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:06:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2134374509, now seen corresponding path program 1 times [2024-11-16 16:06:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:06:55,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679422428] [2024-11-16 16:06:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:06:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:06:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:06:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:06:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:06:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:06:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:06:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:06:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 16:06:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-16 16:06:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 16:06:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 16:06:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 16:06:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 16:06:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 16:06:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-16 16:06:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 16:06:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 16:06:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-16 16:06:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-16 16:06:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-16 16:06:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-16 16:06:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-16 16:06:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 16:06:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 16:06:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 16:06:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-16 16:06:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-16 16:06:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 16:06:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-16 16:06:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-16 16:06:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-11-16 16:06:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-16 16:06:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-16 16:06:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-16 16:06:56,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:06:56,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679422428] [2024-11-16 16:06:56,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679422428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:06:56,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:06:56,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 16:06:56,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513994355] [2024-11-16 16:06:56,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:06:56,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 16:06:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:06:56,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 16:06:56,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 16:06:56,353 INFO L87 Difference]: Start difference. First operand has 119 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 84 states have internal predecessors, (120), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-16 16:06:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:06:56,463 INFO L93 Difference]: Finished difference Result 341 states and 610 transitions. [2024-11-16 16:06:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 16:06:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2024-11-16 16:06:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:06:56,475 INFO L225 Difference]: With dead ends: 341 [2024-11-16 16:06:56,475 INFO L226 Difference]: Without dead ends: 225 [2024-11-16 16:06:56,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:06:56,484 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 106 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:06:56,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 599 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:06:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-16 16:06:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2024-11-16 16:06:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 153 states have (on average 1.4248366013071896) internal successors, (218), 153 states have internal predecessors, (218), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-16 16:06:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 350 transitions. [2024-11-16 16:06:56,553 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 350 transitions. Word has length 215 [2024-11-16 16:06:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:06:56,559 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 350 transitions. [2024-11-16 16:06:56,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-16 16:06:56,559 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 350 transitions. [2024-11-16 16:06:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-16 16:06:56,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:06:56,563 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:06:56,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 16:06:56,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:06:56,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:06:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash -358219470, now seen corresponding path program 1 times [2024-11-16 16:06:56,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:06:56,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635035546] [2024-11-16 16:06:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:06:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:06:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:06:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:06:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:06:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:06:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:06:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:06:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 16:06:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-16 16:06:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 16:06:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 16:06:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 16:06:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 16:06:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 16:06:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-16 16:06:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 16:06:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 16:06:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-16 16:06:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-16 16:06:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-16 16:06:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-16 16:06:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-16 16:06:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 16:06:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 16:06:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-16 16:06:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-16 16:06:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-16 16:06:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 16:06:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-16 16:06:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-16 16:06:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-11-16 16:06:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-16 16:06:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-16 16:06:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 63 proven. 33 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2024-11-16 16:06:58,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:06:58,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635035546] [2024-11-16 16:06:58,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635035546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 16:06:58,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761752952] [2024-11-16 16:06:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:06:58,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 16:06:58,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:06:58,392 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) [2024-11-16 16:06:58,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 16:06:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:06:58,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 16:06:58,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 16:07:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1412 proven. 108 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-16 16:07:07,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 16:07:57,094 WARN L286 SmtUtils]: Spent 11.22s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-16 16:08:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761752952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 16:08:03,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 16:08:03,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20] total 31 [2024-11-16 16:08:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383470858] [2024-11-16 16:08:03,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 16:08:03,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 16:08:03,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:08:03,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 16:08:03,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1122, Unknown=19, NotChecked=0, Total=1332 [2024-11-16 16:08:03,150 INFO L87 Difference]: Start difference. First operand 222 states and 350 transitions. Second operand has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 30 states have internal predecessors, (109), 8 states have call successors, (66), 6 states have call predecessors, (66), 10 states have return successors, (66), 8 states have call predecessors, (66), 8 states have call successors, (66) [2024-11-16 16:08:19,033 WARN L286 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 80 DAG size of output: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-16 16:08:21,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-16 16:08:28,828 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 58 DAG size of output: 47 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-16 16:08:33,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []