./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_const3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/zero_sum_const3.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 4a8466707e2bff30c44c48996d40a42275ef25007ed8ba21de1de20ade9b7ba9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:12:22,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:12:22,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:12:22,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:12:22,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:12:22,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:12:22,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:12:22,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:12:22,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:12:22,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:12:22,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:12:22,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:12:22,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:12:22,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:12:22,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:12:22,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:12:22,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:12:22,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:12:22,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:12:22,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:12:22,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:12:22,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:12:22,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:12:22,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:12:22,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:12:22,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:12:22,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:12:22,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:12:22,865 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:12:22,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:12:22,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:12:22,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:12:22,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:12:22,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:12:22,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:12:22,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:12:22,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:12:22,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:12:22,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:12:22,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:12:22,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:12:22,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:12:22,870 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8466707e2bff30c44c48996d40a42275ef25007ed8ba21de1de20ade9b7ba9 [2024-11-09 18:12:23,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:12:23,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:12:23,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:12:23,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:12:23,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:12:23,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const3.c [2024-11-09 18:12:24,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:12:24,905 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:12:24,906 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const3.c [2024-11-09 18:12:24,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de9d6dfb/b185f16f8ed3499aa14906c49aecab00/FLAG61fc9c910 [2024-11-09 18:12:25,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de9d6dfb/b185f16f8ed3499aa14906c49aecab00 [2024-11-09 18:12:25,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:12:25,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:12:25,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:12:25,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:12:25,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:12:25,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221a37b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25, skipping insertion in model container [2024-11-09 18:12:25,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:12:25,538 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const3.c[406,419] [2024-11-09 18:12:25,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:12:25,569 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:12:25,581 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const3.c[406,419] [2024-11-09 18:12:25,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:12:25,603 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:12:25,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25 WrapperNode [2024-11-09 18:12:25,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:12:25,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:12:25,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:12:25,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:12:25,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,645 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2024-11-09 18:12:25,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:12:25,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:12:25,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:12:25,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:12:25,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,675 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 18:12:25,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,680 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:12:25,685 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:12:25,686 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:12:25,686 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:12:25,687 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (1/1) ... [2024-11-09 18:12:25,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:12:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:25,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:12:25,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:12:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:12:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:12:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:12:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:12:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:12:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:12:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:12:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:12:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:12:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:12:25,955 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:12:25,961 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:12:26,163 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 18:12:26,163 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:12:26,179 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:12:26,180 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:12:26,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:12:26 BoogieIcfgContainer [2024-11-09 18:12:26,181 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:12:26,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:12:26,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:12:26,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:12:26,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:12:25" (1/3) ... [2024-11-09 18:12:26,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6936ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:26, skipping insertion in model container [2024-11-09 18:12:26,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:25" (2/3) ... [2024-11-09 18:12:26,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6936ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:26, skipping insertion in model container [2024-11-09 18:12:26,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:12:26" (3/3) ... [2024-11-09 18:12:26,193 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2024-11-09 18:12:26,210 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:12:26,210 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:12:26,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:12:26,289 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;@1dbe1b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:12:26,290 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:12:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 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) [2024-11-09 18:12:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:12:26,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:26,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:26,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:26,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1617069078, now seen corresponding path program 1 times [2024-11-09 18:12:26,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:26,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772908678] [2024-11-09 18:12:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:26,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772908678] [2024-11-09 18:12:26,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772908678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:26,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:12:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547970622] [2024-11-09 18:12:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:12:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:12:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:12:26,545 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-09 18:12:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:26,562 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2024-11-09 18:12:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:12:26,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-11-09 18:12:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:26,572 INFO L225 Difference]: With dead ends: 62 [2024-11-09 18:12:26,573 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 18:12:26,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:12:26,580 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:26,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:12:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 18:12:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 18:12:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2024-11-09 18:12:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-09 18:12:26,620 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 20 [2024-11-09 18:12:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:26,620 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-09 18:12:26,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-09 18:12:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-09 18:12:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:12:26,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:26,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:26,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:12:26,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:26,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1488502304, now seen corresponding path program 1 times [2024-11-09 18:12:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:26,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538100958] [2024-11-09 18:12:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538100958] [2024-11-09 18:12:26,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538100958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:26,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:12:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911790267] [2024-11-09 18:12:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:26,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:12:26,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:12:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:12:26,815 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 18:12:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:26,864 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-09 18:12:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:12:26,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-11-09 18:12:26,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:26,865 INFO L225 Difference]: With dead ends: 53 [2024-11-09 18:12:26,865 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 18:12:26,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:12:26,867 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:26,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:12:26,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 18:12:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-09 18:12:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2024-11-09 18:12:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-09 18:12:26,873 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 27 [2024-11-09 18:12:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:26,873 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-09 18:12:26,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 18:12:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-09 18:12:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:12:26,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:26,874 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:26,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:12:26,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:26,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -631137985, now seen corresponding path program 1 times [2024-11-09 18:12:26,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:26,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828476381] [2024-11-09 18:12:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:26,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:27,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828476381] [2024-11-09 18:12:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828476381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:27,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:12:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677586259] [2024-11-09 18:12:27,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:27,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:12:27,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:12:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:12:27,014 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-09 18:12:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:27,099 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2024-11-09 18:12:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:12:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 29 [2024-11-09 18:12:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:27,103 INFO L225 Difference]: With dead ends: 62 [2024-11-09 18:12:27,103 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 18:12:27,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:12:27,106 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:27,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 18:12:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 18:12:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 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) [2024-11-09 18:12:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-09 18:12:27,124 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 29 [2024-11-09 18:12:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:27,125 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-09 18:12:27,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-09 18:12:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-09 18:12:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:12:27,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:27,126 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:27,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:12:27,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:27,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1028766657, now seen corresponding path program 1 times [2024-11-09 18:12:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:27,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068257927] [2024-11-09 18:12:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:27,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:27,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068257927] [2024-11-09 18:12:27,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068257927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022304305] [2024-11-09 18:12:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:27,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:27,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:27,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:27,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:12:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:27,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:12:27,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:27,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022304305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:27,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:12:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124526313] [2024-11-09 18:12:27,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:27,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:12:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:12:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:12:27,583 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-09 18:12:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:27,659 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-11-09 18:12:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:12:27,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 41 [2024-11-09 18:12:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:27,660 INFO L225 Difference]: With dead ends: 79 [2024-11-09 18:12:27,660 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 18:12:27,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:12:27,663 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:27,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 18:12:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-09 18:12:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 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) [2024-11-09 18:12:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-09 18:12:27,671 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 41 [2024-11-09 18:12:27,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:27,672 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-09 18:12:27,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-09 18:12:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-09 18:12:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:12:27,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:27,674 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:27,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:12:27,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:27,875 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:27,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:27,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1775290718, now seen corresponding path program 2 times [2024-11-09 18:12:27,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:27,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774909449] [2024-11-09 18:12:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 18:12:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:28,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774909449] [2024-11-09 18:12:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774909449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:28,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002085654] [2024-11-09 18:12:28,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:28,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:28,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:28,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:28,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:12:28,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:28,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:28,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:12:28,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 18:12:28,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 18:12:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002085654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:28,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:28,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 18:12:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149358246] [2024-11-09 18:12:28,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:28,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:12:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:12:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:12:28,301 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2024-11-09 18:12:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:28,399 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-09 18:12:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:12:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 43 [2024-11-09 18:12:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:28,401 INFO L225 Difference]: With dead ends: 86 [2024-11-09 18:12:28,401 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 18:12:28,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:12:28,404 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:28,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 67 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 18:12:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 18:12:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 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) [2024-11-09 18:12:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-09 18:12:28,416 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 43 [2024-11-09 18:12:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:28,417 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-09 18:12:28,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2024-11-09 18:12:28,417 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-09 18:12:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 18:12:28,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:28,419 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:28,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:12:28,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:28,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:28,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1971745886, now seen corresponding path program 3 times [2024-11-09 18:12:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:28,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117172533] [2024-11-09 18:12:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117172533] [2024-11-09 18:12:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117172533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:31,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554678071] [2024-11-09 18:12:31,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:31,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:31,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:31,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:31,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:12:31,134 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:12:31,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:31,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 18:12:31,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:32,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:32,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-11-09 18:12:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:32,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:33,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:33,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2024-11-09 18:12:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:34,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554678071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:34,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:34,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 17] total 43 [2024-11-09 18:12:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65746913] [2024-11-09 18:12:34,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:34,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 18:12:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 18:12:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 18:12:34,148 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 43 states have internal predecessors, (155), 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) [2024-11-09 18:12:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:36,136 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2024-11-09 18:12:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 18:12:36,138 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 43 states have internal predecessors, (155), 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 55 [2024-11-09 18:12:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:36,139 INFO L225 Difference]: With dead ends: 136 [2024-11-09 18:12:36,139 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 18:12:36,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=457, Invalid=3449, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 18:12:36,141 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:36,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 742 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:12:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 18:12:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2024-11-09 18:12:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 88 states have internal predecessors, (100), 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) [2024-11-09 18:12:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-09 18:12:36,160 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 55 [2024-11-09 18:12:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:36,160 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-09 18:12:36,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 43 states have internal predecessors, (155), 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) [2024-11-09 18:12:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-09 18:12:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:12:36,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:36,162 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:36,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:12:36,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:36,367 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:36,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1231652865, now seen corresponding path program 4 times [2024-11-09 18:12:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:36,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818422853] [2024-11-09 18:12:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818422853] [2024-11-09 18:12:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818422853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476136927] [2024-11-09 18:12:36,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:12:36,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:36,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:36,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:36,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:12:36,559 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:12:36,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:36,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:12:36,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:36,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476136927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:36,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:36,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-09 18:12:36,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139752292] [2024-11-09 18:12:36,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:36,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:12:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:12:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:12:36,761 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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) [2024-11-09 18:12:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:37,243 INFO L93 Difference]: Finished difference Result 185 states and 212 transitions. [2024-11-09 18:12:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:12:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 57 [2024-11-09 18:12:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:37,245 INFO L225 Difference]: With dead ends: 185 [2024-11-09 18:12:37,248 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 18:12:37,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:12:37,250 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 227 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:37,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 402 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:12:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 18:12:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-09 18:12:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 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) [2024-11-09 18:12:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2024-11-09 18:12:37,271 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 57 [2024-11-09 18:12:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:37,274 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2024-11-09 18:12:37,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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) [2024-11-09 18:12:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2024-11-09 18:12:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 18:12:37,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:37,275 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:37,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:37,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:37,476 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:37,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2144648643, now seen corresponding path program 5 times [2024-11-09 18:12:37,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:37,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651557619] [2024-11-09 18:12:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651557619] [2024-11-09 18:12:41,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651557619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289375054] [2024-11-09 18:12:41,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:12:41,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:41,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:41,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:41,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:12:41,523 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:12:41,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:41,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-09 18:12:41,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:41,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:12:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:42,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:42,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289375054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:42,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:42,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 14, 11] total 47 [2024-11-09 18:12:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124608560] [2024-11-09 18:12:42,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:42,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 18:12:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 18:12:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1997, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 18:12:42,638 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 47 states, 47 states have (on average 3.9148936170212765) internal successors, (184), 47 states have internal predecessors, (184), 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) [2024-11-09 18:12:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:44,631 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2024-11-09 18:12:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 18:12:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.9148936170212765) internal successors, (184), 47 states have internal predecessors, (184), 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 69 [2024-11-09 18:12:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:44,634 INFO L225 Difference]: With dead ends: 200 [2024-11-09 18:12:44,634 INFO L226 Difference]: Without dead ends: 193 [2024-11-09 18:12:44,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=603, Invalid=4947, Unknown=0, NotChecked=0, Total=5550 [2024-11-09 18:12:44,637 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 424 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:44,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1056 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:12:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-09 18:12:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 131. [2024-11-09 18:12:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1153846153846154) internal successors, (145), 130 states have internal predecessors, (145), 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) [2024-11-09 18:12:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2024-11-09 18:12:44,665 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 69 [2024-11-09 18:12:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:44,666 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2024-11-09 18:12:44,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.9148936170212765) internal successors, (184), 47 states have internal predecessors, (184), 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) [2024-11-09 18:12:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2024-11-09 18:12:44,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:12:44,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:44,668 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:44,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:44,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:44,871 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:44,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1796072420, now seen corresponding path program 6 times [2024-11-09 18:12:44,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:44,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140520390] [2024-11-09 18:12:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:44,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:45,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:45,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140520390] [2024-11-09 18:12:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140520390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818249936] [2024-11-09 18:12:45,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:12:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:45,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:45,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:12:45,103 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 18:12:45,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:45,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:12:45,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:45,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:12:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818249936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:45,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:12:45,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410086706] [2024-11-09 18:12:45,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:45,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:12:45,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:12:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:45,333 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-09 18:12:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:45,542 INFO L93 Difference]: Finished difference Result 245 states and 273 transitions. [2024-11-09 18:12:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:12:45,543 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 71 [2024-11-09 18:12:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:45,544 INFO L225 Difference]: With dead ends: 245 [2024-11-09 18:12:45,544 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 18:12:45,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 129 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:45,545 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 113 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:45,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 172 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:12:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 18:12:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2024-11-09 18:12:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 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) [2024-11-09 18:12:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-09 18:12:45,566 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 71 [2024-11-09 18:12:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:45,566 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-09 18:12:45,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-09 18:12:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-09 18:12:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 18:12:45,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:45,568 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:45,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:12:45,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:45,770 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:45,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1306348547, now seen corresponding path program 7 times [2024-11-09 18:12:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148380860] [2024-11-09 18:12:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:12:45,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:45,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148380860] [2024-11-09 18:12:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148380860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:45,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938857861] [2024-11-09 18:12:45,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:12:45,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:45,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:45,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:45,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:12:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:46,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:12:46,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:12:46,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:12:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938857861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:46,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:12:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585035797] [2024-11-09 18:12:46,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:46,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:12:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:12:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:12:46,296 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-09 18:12:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:46,502 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2024-11-09 18:12:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:12:46,503 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 81 [2024-11-09 18:12:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:46,505 INFO L225 Difference]: With dead ends: 89 [2024-11-09 18:12:46,505 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 18:12:46,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:12:46,506 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 123 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:46,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 192 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:12:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 18:12:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-09 18:12:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 83 states have internal predecessors, (90), 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) [2024-11-09 18:12:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2024-11-09 18:12:46,520 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 81 [2024-11-09 18:12:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:46,521 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2024-11-09 18:12:46,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-09 18:12:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2024-11-09 18:12:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 18:12:46,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:46,522 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:46,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:46,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:46,723 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:46,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash 651435484, now seen corresponding path program 8 times [2024-11-09 18:12:46,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:46,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811841774] [2024-11-09 18:12:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:51,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:51,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811841774] [2024-11-09 18:12:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811841774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:51,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997945626] [2024-11-09 18:12:51,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:51,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:51,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:51,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:51,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:12:51,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:51,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:51,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-09 18:12:51,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:51,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:12:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:52,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:12:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997945626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:52,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 17, 13] total 60 [2024-11-09 18:12:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102140157] [2024-11-09 18:12:52,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:52,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-09 18:12:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-09 18:12:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3328, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 18:12:52,584 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 60 states, 60 states have (on average 3.7333333333333334) internal successors, (224), 60 states have internal predecessors, (224), 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) [2024-11-09 18:12:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:55,736 INFO L93 Difference]: Finished difference Result 248 states and 274 transitions. [2024-11-09 18:12:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 18:12:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.7333333333333334) internal successors, (224), 60 states have internal predecessors, (224), 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 83 [2024-11-09 18:12:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:55,738 INFO L225 Difference]: With dead ends: 248 [2024-11-09 18:12:55,738 INFO L226 Difference]: Without dead ends: 241 [2024-11-09 18:12:55,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=846, Invalid=8274, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 18:12:55,740 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 665 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:55,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1704 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 18:12:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-09 18:12:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2024-11-09 18:12:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0961538461538463) internal successors, (171), 156 states have internal predecessors, (171), 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) [2024-11-09 18:12:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2024-11-09 18:12:55,768 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 83 [2024-11-09 18:12:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:55,768 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2024-11-09 18:12:55,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.7333333333333334) internal successors, (224), 60 states have internal predecessors, (224), 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) [2024-11-09 18:12:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2024-11-09 18:12:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 18:12:55,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:55,769 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:55,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:12:55,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 18:12:55,971 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:55,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 886213627, now seen corresponding path program 9 times [2024-11-09 18:12:55,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:55,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59377203] [2024-11-09 18:12:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:12:56,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:56,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59377203] [2024-11-09 18:12:56,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59377203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:56,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506220746] [2024-11-09 18:12:56,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:56,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:56,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:56,172 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:56,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:12:56,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 18:12:56,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:56,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:12:56,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:12:56,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:12:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506220746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:56,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:56,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:12:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370177302] [2024-11-09 18:12:56,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:56,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:12:56,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:56,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:12:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:56,523 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 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) [2024-11-09 18:12:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:56,748 INFO L93 Difference]: Finished difference Result 291 states and 319 transitions. [2024-11-09 18:12:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:12:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 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 85 [2024-11-09 18:12:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:56,749 INFO L225 Difference]: With dead ends: 291 [2024-11-09 18:12:56,749 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 18:12:56,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 154 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:12:56,750 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 207 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:56,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 210 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:12:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 18:12:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 96. [2024-11-09 18:12:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 95 states have internal predecessors, (102), 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) [2024-11-09 18:12:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2024-11-09 18:12:56,765 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 85 [2024-11-09 18:12:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:56,765 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2024-11-09 18:12:56,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 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) [2024-11-09 18:12:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2024-11-09 18:12:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 18:12:56,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:56,766 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:56,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:56,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:56,966 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:56,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:56,967 INFO L85 PathProgramCache]: Analyzing trace with hash 748149020, now seen corresponding path program 10 times [2024-11-09 18:12:56,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:56,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792707876] [2024-11-09 18:12:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:56,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:12:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792707876] [2024-11-09 18:12:57,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792707876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:57,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467541260] [2024-11-09 18:12:57,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:12:57,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:57,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:57,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:12:57,229 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:12:57,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:57,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:12:57,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:12:57,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:12:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467541260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:57,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:57,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 18:12:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137770514] [2024-11-09 18:12:57,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:57,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:12:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:12:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:12:57,477 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 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) [2024-11-09 18:12:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:57,664 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2024-11-09 18:12:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:12:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 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 [2024-11-09 18:12:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:57,665 INFO L225 Difference]: With dead ends: 103 [2024-11-09 18:12:57,665 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 18:12:57,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 174 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-11-09 18:12:57,666 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 125 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:57,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 234 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 18:12:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 18:12:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 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) [2024-11-09 18:12:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-11-09 18:12:57,684 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 95 [2024-11-09 18:12:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:57,684 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-11-09 18:12:57,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 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) [2024-11-09 18:12:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-11-09 18:12:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 18:12:57,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:57,685 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:57,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:12:57,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:12:57,886 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:57,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash -661358789, now seen corresponding path program 11 times [2024-11-09 18:12:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706497369] [2024-11-09 18:12:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 2 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:03,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:03,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706497369] [2024-11-09 18:13:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706497369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:03,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56070755] [2024-11-09 18:13:03,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:13:03,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:03,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:03,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:03,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:13:03,899 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:13:03,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:03,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-09 18:13:03,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:04,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:04,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:04,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:13:05,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56070755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:05,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:05,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 20, 15] total 71 [2024-11-09 18:13:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562119900] [2024-11-09 18:13:05,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:05,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-09 18:13:05,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-09 18:13:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=4652, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 18:13:05,487 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 71 states, 71 states have (on average 3.7183098591549295) internal successors, (264), 71 states have internal predecessors, (264), 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) [2024-11-09 18:13:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:08,984 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2024-11-09 18:13:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 18:13:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.7183098591549295) internal successors, (264), 71 states have internal predecessors, (264), 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 97 [2024-11-09 18:13:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:08,986 INFO L225 Difference]: With dead ends: 308 [2024-11-09 18:13:08,986 INFO L226 Difference]: Without dead ends: 275 [2024-11-09 18:13:08,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3315 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=964, Invalid=11026, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 18:13:08,988 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 555 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:08,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 2519 Invalid, 3673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 18:13:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-09 18:13:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 188. [2024-11-09 18:13:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.085561497326203) internal successors, (203), 187 states have internal predecessors, (203), 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) [2024-11-09 18:13:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2024-11-09 18:13:09,021 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 97 [2024-11-09 18:13:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:09,022 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2024-11-09 18:13:09,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.7183098591549295) internal successors, (264), 71 states have internal predecessors, (264), 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) [2024-11-09 18:13:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2024-11-09 18:13:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 18:13:09,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:09,023 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:09,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:13:09,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:13:09,223 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:09,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2011302298, now seen corresponding path program 12 times [2024-11-09 18:13:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:09,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506949753] [2024-11-09 18:13:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:09,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:13:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506949753] [2024-11-09 18:13:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506949753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258316229] [2024-11-09 18:13:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:13:09,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:09,437 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:09,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:13:09,537 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:13:09,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:09,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:13:09,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:13:09,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:13:09,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258316229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:09,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:09,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:13:09,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348073763] [2024-11-09 18:13:09,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:09,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:13:09,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:13:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:13:09,866 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 23 states have internal predecessors, (91), 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) [2024-11-09 18:13:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:10,224 INFO L93 Difference]: Finished difference Result 342 states and 370 transitions. [2024-11-09 18:13:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:13:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 23 states have internal predecessors, (91), 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 99 [2024-11-09 18:13:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:10,225 INFO L225 Difference]: With dead ends: 342 [2024-11-09 18:13:10,225 INFO L226 Difference]: Without dead ends: 117 [2024-11-09 18:13:10,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 184 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:13:10,226 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 193 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:10,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 306 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:13:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-09 18:13:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2024-11-09 18:13:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0642201834862386) internal successors, (116), 109 states have internal predecessors, (116), 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) [2024-11-09 18:13:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2024-11-09 18:13:10,249 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 99 [2024-11-09 18:13:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:10,249 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2024-11-09 18:13:10,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 23 states have internal predecessors, (91), 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) [2024-11-09 18:13:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2024-11-09 18:13:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 18:13:10,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:10,250 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:10,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:13:10,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:13:10,451 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:10,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:10,451 INFO L85 PathProgramCache]: Analyzing trace with hash 796154875, now seen corresponding path program 13 times [2024-11-09 18:13:10,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:10,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383831489] [2024-11-09 18:13:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 18:13:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:10,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383831489] [2024-11-09 18:13:10,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383831489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:10,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956108646] [2024-11-09 18:13:10,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:13:10,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:10,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:10,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:13:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:10,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:13:10,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 18:13:10,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 18:13:11,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956108646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:11,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:11,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-09 18:13:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477502170] [2024-11-09 18:13:11,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:11,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:13:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:13:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:13:11,093 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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) [2024-11-09 18:13:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:11,343 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2024-11-09 18:13:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 18:13:11,343 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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 109 [2024-11-09 18:13:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:11,344 INFO L225 Difference]: With dead ends: 117 [2024-11-09 18:13:11,344 INFO L226 Difference]: Without dead ends: 112 [2024-11-09 18:13:11,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 198 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:13:11,345 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 169 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:11,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 321 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-09 18:13:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-09 18:13:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.063063063063063) internal successors, (118), 111 states have internal predecessors, (118), 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) [2024-11-09 18:13:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2024-11-09 18:13:11,363 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 109 [2024-11-09 18:13:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:11,364 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 118 transitions. [2024-11-09 18:13:11,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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) [2024-11-09 18:13:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions. [2024-11-09 18:13:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 18:13:11,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:11,364 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:11,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:13:11,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 18:13:11,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:11,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1772372390, now seen corresponding path program 14 times [2024-11-09 18:13:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:11,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228939568] [2024-11-09 18:13:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 2 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:19,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228939568] [2024-11-09 18:13:19,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228939568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:19,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103101339] [2024-11-09 18:13:19,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:13:19,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:19,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:19,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:19,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:13:19,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:13:19,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:19,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-09 18:13:19,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:19,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:20,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:13:21,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103101339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:21,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:21,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 23, 17] total 83 [2024-11-09 18:13:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409206877] [2024-11-09 18:13:21,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:21,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-09 18:13:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-09 18:13:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=6444, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 18:13:21,958 INFO L87 Difference]: Start difference. First operand 112 states and 118 transitions. Second operand has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 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) [2024-11-09 18:13:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:26,622 INFO L93 Difference]: Finished difference Result 395 states and 424 transitions. [2024-11-09 18:13:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 18:13:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 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 111 [2024-11-09 18:13:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:26,623 INFO L225 Difference]: With dead ends: 395 [2024-11-09 18:13:26,624 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 18:13:26,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3802 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1089, Invalid=14411, Unknown=0, NotChecked=0, Total=15500 [2024-11-09 18:13:26,628 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 613 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:26,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 2877 Invalid, 4079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 3566 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 18:13:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 18:13:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 246. [2024-11-09 18:13:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.0653061224489795) internal successors, (261), 245 states have internal predecessors, (261), 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) [2024-11-09 18:13:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 261 transitions. [2024-11-09 18:13:26,676 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 261 transitions. Word has length 111 [2024-11-09 18:13:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:26,677 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 261 transitions. [2024-11-09 18:13:26,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 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) [2024-11-09 18:13:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 261 transitions. [2024-11-09 18:13:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-09 18:13:26,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:26,678 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:26,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:13:26,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:26,879 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:26,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash -520878855, now seen corresponding path program 15 times [2024-11-09 18:13:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:26,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302784453] [2024-11-09 18:13:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:26,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 44 proven. 54 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 18:13:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302784453] [2024-11-09 18:13:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302784453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229154726] [2024-11-09 18:13:27,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:13:27,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:27,144 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:27,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:13:27,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 18:13:27,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:27,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:13:27,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 18:13:27,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 18:13:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229154726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:27,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:13:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071468709] [2024-11-09 18:13:27,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:27,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:13:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:13:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:13:27,538 INFO L87 Difference]: Start difference. First operand 246 states and 261 transitions. Second operand has 26 states, 26 states have (on average 4.115384615384615) internal successors, (107), 26 states have internal predecessors, (107), 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) [2024-11-09 18:13:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:27,854 INFO L93 Difference]: Finished difference Result 368 states and 391 transitions. [2024-11-09 18:13:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:13:27,854 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.115384615384615) internal successors, (107), 26 states have internal predecessors, (107), 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 113 [2024-11-09 18:13:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:27,855 INFO L225 Difference]: With dead ends: 368 [2024-11-09 18:13:27,855 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 18:13:27,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 210 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-09 18:13:27,856 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 229 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:27,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 329 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 18:13:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2024-11-09 18:13:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.056910569105691) internal successors, (130), 123 states have internal predecessors, (130), 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) [2024-11-09 18:13:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2024-11-09 18:13:27,878 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 113 [2024-11-09 18:13:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:27,878 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2024-11-09 18:13:27,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.115384615384615) internal successors, (107), 26 states have internal predecessors, (107), 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) [2024-11-09 18:13:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2024-11-09 18:13:27,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 18:13:27,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:27,879 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:27,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:13:28,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:13:28,080 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:28,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1352641690, now seen corresponding path program 16 times [2024-11-09 18:13:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28334499] [2024-11-09 18:13:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-09 18:13:28,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28334499] [2024-11-09 18:13:28,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28334499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332009782] [2024-11-09 18:13:28,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:13:28,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:28,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:13:28,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:13:28,463 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:13:28,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:28,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:13:28,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-09 18:13:28,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-09 18:13:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332009782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:28,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-09 18:13:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928592476] [2024-11-09 18:13:28,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:28,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:13:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:13:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:13:28,804 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 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) [2024-11-09 18:13:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:29,109 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2024-11-09 18:13:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 18:13:29,110 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 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 123 [2024-11-09 18:13:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:29,111 INFO L225 Difference]: With dead ends: 131 [2024-11-09 18:13:29,111 INFO L226 Difference]: Without dead ends: 126 [2024-11-09 18:13:29,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 224 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 18:13:29,112 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 171 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:29,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 400 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-09 18:13:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-09 18:13:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.056) internal successors, (132), 125 states have internal predecessors, (132), 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) [2024-11-09 18:13:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2024-11-09 18:13:29,137 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 123 [2024-11-09 18:13:29,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:29,137 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2024-11-09 18:13:29,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 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) [2024-11-09 18:13:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2024-11-09 18:13:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 18:13:29,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:29,138 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:29,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:29,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:29,339 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:29,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 435512121, now seen corresponding path program 17 times [2024-11-09 18:13:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924373691] [2024-11-09 18:13:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat