./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/float-benchs/zonotope_3.c.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:59:22,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:59:22,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:59:22,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:59:22,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:59:22,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:59:22,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:59:22,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:59:22,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:59:22,421 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:59:22,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:59:22,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:59:22,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:59:22,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:59:22,422 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:59:22,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:59:22,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:59:22,423 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:59:22,423 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:59:22,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:59:22,424 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 [2025-03-16 15:59:22,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:59:22,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:59:22,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:59:22,659 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:59:22,660 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:59:22,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2025-03-16 15:59:23,760 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f088def/8ef1b978d2534f789678acfddaeeb987/FLAG2cdd583a1 [2025-03-16 15:59:23,994 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:59:23,995 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2025-03-16 15:59:24,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f088def/8ef1b978d2534f789678acfddaeeb987/FLAG2cdd583a1 [2025-03-16 15:59:24,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f088def/8ef1b978d2534f789678acfddaeeb987 [2025-03-16 15:59:24,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:59:24,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:59:24,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:59:24,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:59:24,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:59:24,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289c747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24, skipping insertion in model container [2025-03-16 15:59:24,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:59:24,132 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/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2025-03-16 15:59:24,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:59:24,141 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:59:24,163 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/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2025-03-16 15:59:24,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:59:24,175 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:59:24,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24 WrapperNode [2025-03-16 15:59:24,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:59:24,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:59:24,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:59:24,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:59:24,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,195 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 126 [2025-03-16 15:59:24,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:59:24,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:59:24,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:59:24,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:59:24,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,209 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]. [2025-03-16 15:59:24,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,213 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:59:24,216 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:59:24,216 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:59:24,216 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:59:24,217 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (1/1) ... [2025-03-16 15:59:24,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:59:24,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:24,239 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) [2025-03-16 15:59:24,241 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 [2025-03-16 15:59:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:59:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:59:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:59:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:59:24,302 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:59:24,304 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:59:24,411 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: havoc main_~__tmp_8~0#1, main_~g__x~3#1;havoc main_~__tmp_7~0#1, main_~f__x~3#1, main_~main____CPAchecker_TMP_1~0#1;havoc main_~__tmp_6~0#1, main_~g__x~2#1;havoc main_~__tmp_5~0#1, main_~f__x~2#1;havoc main_~main____CPAchecker_TMP_0~0#1; [2025-03-16 15:59:24,411 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: havoc main_~__tmp_4~0#1, main_~g__x~1#1;havoc main_~__tmp_3~0#1, main_~f__x~1#1;havoc main_~__tmp_2~0#1, main_~g__x~0#1;havoc main_~__tmp_1~0#1, main_~f__x~0#1; [2025-03-16 15:59:24,411 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L137: havoc main_~__tmp_9~0#1, main_~__VERIFIER_assert__cond~0#1;havoc main_~main____CPAchecker_TMP_2~0#1; [2025-03-16 15:59:24,424 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2025-03-16 15:59:24,424 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:59:24,434 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:59:24,434 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:59:24,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:59:24 BoogieIcfgContainer [2025-03-16 15:59:24,434 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:59:24,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:59:24,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:59:24,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:59:24,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:59:24" (1/3) ... [2025-03-16 15:59:24,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eee007f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:59:24, skipping insertion in model container [2025-03-16 15:59:24,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:59:24" (2/3) ... [2025-03-16 15:59:24,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eee007f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:59:24, skipping insertion in model container [2025-03-16 15:59:24,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:59:24" (3/3) ... [2025-03-16 15:59:24,443 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2025-03-16 15:59:24,455 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:59:24,456 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c.p+cfa-reducer.c that has 1 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 15:59:24,500 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:59:24,508 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;@25ebbd60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:59:24,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:59:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 15:59:24,516 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:24,516 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:24,517 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:24,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash -550496454, now seen corresponding path program 1 times [2025-03-16 15:59:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:24,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066264987] [2025-03-16 15:59:24,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:59:24,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:24,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 15:59:24,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 15:59:24,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:59:24,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:24,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066264987] [2025-03-16 15:59:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066264987] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:59:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:59:24,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:59:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174867289] [2025-03-16 15:59:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:59:24,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:59:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:24,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:59:24,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:59:24,663 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:24,679 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2025-03-16 15:59:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:59:24,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-16 15:59:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:24,684 INFO L225 Difference]: With dead ends: 32 [2025-03-16 15:59:24,684 INFO L226 Difference]: Without dead ends: 18 [2025-03-16 15:59:24,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:59:24,687 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 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 [2025-03-16 15:59:24,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:59:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-03-16 15:59:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2025-03-16 15:59:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2025-03-16 15:59:24,704 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 7 [2025-03-16 15:59:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:24,705 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2025-03-16 15:59:24,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2025-03-16 15:59:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-16 15:59:24,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:24,705 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:24,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:59:24,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:24,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:24,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1302058380, now seen corresponding path program 1 times [2025-03-16 15:59:24,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:24,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092780322] [2025-03-16 15:59:24,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:59:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:24,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-16 15:59:24,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-16 15:59:24,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:59:24,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092780322] [2025-03-16 15:59:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092780322] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:59:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103518465] [2025-03-16 15:59:24,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:59:24,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:24,791 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) [2025-03-16 15:59:24,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 15:59:24,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-16 15:59:24,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-16 15:59:24,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:59:24,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:24,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 15:59:24,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:59:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:24,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:59:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:24,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103518465] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:59:24,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:59:24,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-16 15:59:24,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601592334] [2025-03-16 15:59:24,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:59:24,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 15:59:24,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:24,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 15:59:24,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:59:24,946 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:24,974 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2025-03-16 15:59:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 15:59:24,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-16 15:59:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:24,975 INFO L225 Difference]: With dead ends: 36 [2025-03-16 15:59:24,975 INFO L226 Difference]: Without dead ends: 29 [2025-03-16 15:59:24,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:59:24,975 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 59 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 [2025-03-16 15:59:24,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 59 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:59:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-16 15:59:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-16 15:59:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2025-03-16 15:59:24,978 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 11 [2025-03-16 15:59:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:24,978 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2025-03-16 15:59:24,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2025-03-16 15:59:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-16 15:59:24,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:24,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:24,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 15:59:25,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:25,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:25,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1306088994, now seen corresponding path program 2 times [2025-03-16 15:59:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575381623] [2025-03-16 15:59:25,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 15:59:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:25,200 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-16 15:59:25,212 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-16 15:59:25,212 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 15:59:25,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:25,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:25,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575381623] [2025-03-16 15:59:25,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575381623] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:59:25,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819601342] [2025-03-16 15:59:25,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 15:59:25,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:25,352 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) [2025-03-16 15:59:25,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 15:59:25,405 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-16 15:59:25,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-16 15:59:25,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 15:59:25,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:25,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 15:59:25,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:59:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:25,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:59:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819601342] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:59:25,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:59:25,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-16 15:59:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865336915] [2025-03-16 15:59:25,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:59:25,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 15:59:25,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:25,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 15:59:25,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-16 15:59:25,547 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:25,595 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2025-03-16 15:59:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 15:59:25,596 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-03-16 15:59:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:25,597 INFO L225 Difference]: With dead ends: 66 [2025-03-16 15:59:25,597 INFO L226 Difference]: Without dead ends: 59 [2025-03-16 15:59:25,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-16 15:59:25,598 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:59:25,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:59:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-03-16 15:59:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-03-16 15:59:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2025-03-16 15:59:25,606 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 23 [2025-03-16 15:59:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:25,606 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2025-03-16 15:59:25,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2025-03-16 15:59:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-16 15:59:25,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:25,607 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:25,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 15:59:25,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-16 15:59:25,808 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:25,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1127018110, now seen corresponding path program 3 times [2025-03-16 15:59:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463789583] [2025-03-16 15:59:25,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 15:59:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:25,829 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 11 equivalence classes. [2025-03-16 15:59:25,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 15:59:25,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-16 15:59:25,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463789583] [2025-03-16 15:59:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463789583] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:59:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354654033] [2025-03-16 15:59:26,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 15:59:26,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:26,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:26,056 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) [2025-03-16 15:59:26,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 15:59:26,120 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 11 equivalence classes. [2025-03-16 15:59:26,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 15:59:26,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-16 15:59:26,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:26,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 15:59:26,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:59:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:26,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:59:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:26,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354654033] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:59:26,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:59:26,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-03-16 15:59:26,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090853376] [2025-03-16 15:59:26,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:59:26,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-16 15:59:26,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:26,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-16 15:59:26,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-16 15:59:26,502 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:26,574 INFO L93 Difference]: Finished difference Result 126 states and 185 transitions. [2025-03-16 15:59:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-16 15:59:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-03-16 15:59:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:26,576 INFO L225 Difference]: With dead ends: 126 [2025-03-16 15:59:26,576 INFO L226 Difference]: Without dead ends: 119 [2025-03-16 15:59:26,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-16 15:59:26,577 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 150 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:59:26,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 168 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:59:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-03-16 15:59:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-03-16 15:59:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3983050847457628) internal successors, (165), 118 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2025-03-16 15:59:26,591 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 47 [2025-03-16 15:59:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:26,591 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2025-03-16 15:59:26,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2025-03-16 15:59:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-16 15:59:26,592 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:26,593 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:26,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 15:59:26,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:26,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:26,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash -892656842, now seen corresponding path program 4 times [2025-03-16 15:59:26,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927886230] [2025-03-16 15:59:26,795 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 15:59:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:26,831 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 95 statements into 2 equivalence classes. [2025-03-16 15:59:26,847 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 15:59:26,847 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 15:59:26,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:27,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:27,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927886230] [2025-03-16 15:59:27,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927886230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:59:27,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752982623] [2025-03-16 15:59:27,379 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 15:59:27,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:27,381 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) [2025-03-16 15:59:27,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 15:59:27,478 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 95 statements into 2 equivalence classes. [2025-03-16 15:59:27,557 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 15:59:27,558 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 15:59:27,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:27,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-16 15:59:27,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:59:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:27,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:59:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752982623] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:59:28,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:59:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2025-03-16 15:59:28,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953877538] [2025-03-16 15:59:28,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:59:28,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-16 15:59:28,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:28,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-16 15:59:28,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-16 15:59:28,354 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 47 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:28,555 INFO L93 Difference]: Finished difference Result 246 states and 365 transitions. [2025-03-16 15:59:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-16 15:59:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 47 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2025-03-16 15:59:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:28,557 INFO L225 Difference]: With dead ends: 246 [2025-03-16 15:59:28,557 INFO L226 Difference]: Without dead ends: 239 [2025-03-16 15:59:28,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-16 15:59:28,559 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 678 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:59:28,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 272 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 15:59:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-03-16 15:59:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2025-03-16 15:59:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3991596638655461) internal successors, (333), 238 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2025-03-16 15:59:28,572 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 95 [2025-03-16 15:59:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:28,573 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2025-03-16 15:59:28,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 47 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2025-03-16 15:59:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-03-16 15:59:28,578 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:28,578 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:28,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 15:59:28,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:28,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:28,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:28,783 INFO L85 PathProgramCache]: Analyzing trace with hash 510893222, now seen corresponding path program 5 times [2025-03-16 15:59:28,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:28,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298741416] [2025-03-16 15:59:28,783 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 15:59:28,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:28,840 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 191 statements into 47 equivalence classes. [2025-03-16 15:59:28,925 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 191 of 191 statements. [2025-03-16 15:59:28,925 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 15:59:28,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:30,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:30,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298741416] [2025-03-16 15:59:30,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298741416] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:59:30,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153318089] [2025-03-16 15:59:30,569 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 15:59:30,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:30,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:30,572 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) [2025-03-16 15:59:30,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 15:59:30,739 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 191 statements into 47 equivalence classes. [2025-03-16 15:59:30,921 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 191 of 191 statements. [2025-03-16 15:59:30,922 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 15:59:30,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:30,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-16 15:59:30,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:59:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:31,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:59:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153318089] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:59:33,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:59:33,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2025-03-16 15:59:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412657769] [2025-03-16 15:59:33,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:59:33,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-16 15:59:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:33,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-16 15:59:33,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-16 15:59:33,037 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 95 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:34,010 INFO L93 Difference]: Finished difference Result 486 states and 725 transitions. [2025-03-16 15:59:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-16 15:59:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 95 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2025-03-16 15:59:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:34,012 INFO L225 Difference]: With dead ends: 486 [2025-03-16 15:59:34,012 INFO L226 Difference]: Without dead ends: 479 [2025-03-16 15:59:34,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-16 15:59:34,015 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 954 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:59:34,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 528 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 15:59:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2025-03-16 15:59:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2025-03-16 15:59:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.399581589958159) internal successors, (669), 478 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 669 transitions. [2025-03-16 15:59:34,036 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 669 transitions. Word has length 191 [2025-03-16 15:59:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:34,036 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 669 transitions. [2025-03-16 15:59:34,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 95 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 669 transitions. [2025-03-16 15:59:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-16 15:59:34,041 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:34,041 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:34,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 15:59:34,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:34,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:34,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1141583994, now seen corresponding path program 6 times [2025-03-16 15:59:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:34,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999329263] [2025-03-16 15:59:34,243 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 15:59:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:34,342 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 383 statements into 95 equivalence classes. [2025-03-16 15:59:34,422 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 383 of 383 statements. [2025-03-16 15:59:34,422 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-16 15:59:34,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:59:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999329263] [2025-03-16 15:59:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999329263] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:59:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250239251] [2025-03-16 15:59:39,008 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 15:59:39,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:39,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:59:39,012 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) [2025-03-16 15:59:39,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 15:59:39,340 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 383 statements into 95 equivalence classes. [2025-03-16 15:59:39,800 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 383 of 383 statements. [2025-03-16 15:59:39,800 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-16 15:59:39,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:59:39,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-16 15:59:39,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:59:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:40,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 15:59:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:59:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250239251] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 15:59:47,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 15:59:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2025-03-16 15:59:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040128517] [2025-03-16 15:59:47,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 15:59:47,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-16 15:59:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:59:47,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-16 15:59:47,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-16 15:59:47,079 INFO L87 Difference]: Start difference. First operand 479 states and 669 transitions. Second operand has 193 states, 193 states have (on average 3.9689119170984455) internal successors, (766), 192 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:59:57,264 INFO L93 Difference]: Finished difference Result 966 states and 1445 transitions. [2025-03-16 15:59:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-03-16 15:59:57,265 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.9689119170984455) internal successors, (766), 192 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2025-03-16 15:59:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:59:57,267 INFO L225 Difference]: With dead ends: 966 [2025-03-16 15:59:57,268 INFO L226 Difference]: Without dead ends: 959 [2025-03-16 15:59:57,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-16 15:59:57,270 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2670 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:59:57,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 1000 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 15:59:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2025-03-16 15:59:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2025-03-16 15:59:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.3997912317327765) internal successors, (1341), 958 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1341 transitions. [2025-03-16 15:59:57,288 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1341 transitions. Word has length 383 [2025-03-16 15:59:57,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:59:57,289 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1341 transitions. [2025-03-16 15:59:57,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.9689119170984455) internal successors, (766), 192 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:59:57,290 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1341 transitions. [2025-03-16 15:59:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2025-03-16 15:59:57,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:59:57,300 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:59:57,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 15:59:57,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:59:57,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:59:57,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:59:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash -206031546, now seen corresponding path program 7 times [2025-03-16 15:59:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:59:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077883771] [2025-03-16 15:59:57,502 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 15:59:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:59:57,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 767 statements into 1 equivalence classes. [2025-03-16 15:59:57,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 767 of 767 statements. [2025-03-16 15:59:57,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:59:57,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:00:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:00:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 16:00:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077883771] [2025-03-16 16:00:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077883771] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 16:00:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078032174] [2025-03-16 16:00:16,157 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 16:00:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 16:00:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 16:00:16,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 16:00:16,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 16:00:16,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 767 statements into 1 equivalence classes. [2025-03-16 16:00:17,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 767 of 767 statements. [2025-03-16 16:00:17,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:00:17,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:00:17,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 6148 conjuncts, 192 conjuncts are in the unsatisfiable core [2025-03-16 16:00:17,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:00:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:00:17,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 16:00:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:00:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078032174] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 16:00:44,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 16:00:44,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2025-03-16 16:00:44,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507365066] [2025-03-16 16:00:44,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 16:00:44,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2025-03-16 16:00:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 16:00:44,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2025-03-16 16:00:44,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2025-03-16 16:00:44,699 INFO L87 Difference]: Start difference. First operand 959 states and 1341 transitions. Second operand has 385 states, 385 states have (on average 3.9844155844155846) internal successors, (1534), 384 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)