./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_const4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/zero_sum_const4.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 e61c61c9ffe0a2031cf5a0964b1882adcc5bdae1b7345aeaf1c374f155ad9e78 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:40:54,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:40:55,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:40:55,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:40:55,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:40:55,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:40:55,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:40:55,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:40:55,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:40:55,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:40:55,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:40:55,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:40:55,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:40:55,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:40:55,127 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:40:55,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:40:55,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:40:55,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:40:55,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:40:55,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:40:55,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:40:55,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:40:55,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:40:55,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:40:55,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:40:55,134 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:40:55,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:40:55,134 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:40:55,134 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:40:55,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:40:55,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:40:55,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:40:55,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:40:55,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:40:55,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:40:55,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:40:55,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:40:55,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:40:55,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:40:55,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:40:55,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:40:55,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:40:55,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61c61c9ffe0a2031cf5a0964b1882adcc5bdae1b7345aeaf1c374f155ad9e78 [2024-11-16 02:40:55,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:40:55,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:40:55,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:40:55,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:40:55,414 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:40:55,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const4.c [2024-11-16 02:40:56,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:40:57,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:40:57,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const4.c [2024-11-16 02:40:57,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644cddb88/d6551916c2f4478a81071d1d9ede608b/FLAG7a5667ecc [2024-11-16 02:40:57,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644cddb88/d6551916c2f4478a81071d1d9ede608b [2024-11-16 02:40:57,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:40:57,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:40:57,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:40:57,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:40:57,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:40:57,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd6c949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57, skipping insertion in model container [2024-11-16 02:40:57,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:40:57,588 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_const4.c[406,419] [2024-11-16 02:40:57,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:40:57,629 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:40:57,640 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_const4.c[406,419] [2024-11-16 02:40:57,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:40:57,666 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:40:57,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57 WrapperNode [2024-11-16 02:40:57,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:40:57,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:40:57,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:40:57,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:40:57,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,700 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2024-11-16 02:40:57,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:40:57,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:40:57,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:40:57,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:40:57,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,731 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-11-16 02:40:57,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,738 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:40:57,750 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:40:57,751 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:40:57,751 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:40:57,752 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (1/1) ... [2024-11-16 02:40:57,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:40:57,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:57,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:40:57,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:40:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:40:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:40:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:40:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:40:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:40:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 02:40:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:40:57,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:40:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:40:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:40:57,934 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:40:57,936 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:40:58,110 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-16 02:40:58,110 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:40:58,120 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:40:58,121 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:40:58,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:40:58 BoogieIcfgContainer [2024-11-16 02:40:58,121 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:40:58,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:40:58,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:40:58,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:40:58,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:40:57" (1/3) ... [2024-11-16 02:40:58,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd794ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:40:58, skipping insertion in model container [2024-11-16 02:40:58,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:40:57" (2/3) ... [2024-11-16 02:40:58,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd794ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:40:58, skipping insertion in model container [2024-11-16 02:40:58,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:40:58" (3/3) ... [2024-11-16 02:40:58,130 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const4.c [2024-11-16 02:40:58,148 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:40:58,148 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:40:58,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:40:58,231 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;@3d64063a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:40:58,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:40:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 39 states have internal predecessors, (59), 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) [2024-11-16 02:40:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:40:58,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:58,247 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] [2024-11-16 02:40:58,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:58,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 558911476, now seen corresponding path program 1 times [2024-11-16 02:40:58,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:58,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394548948] [2024-11-16 02:40:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:58,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:40:58,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:58,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394548948] [2024-11-16 02:40:58,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394548948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:40:58,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:40:58,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:40:58,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925169086] [2024-11-16 02:40:58,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:40:58,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:40:58,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:40:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:40:58,495 INFO L87 Difference]: Start difference. First operand has 40 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 39 states have internal predecessors, (59), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-16 02:40:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:58,510 INFO L93 Difference]: Finished difference Result 74 states and 109 transitions. [2024-11-16 02:40:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:40:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2024-11-16 02:40:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:58,519 INFO L225 Difference]: With dead ends: 74 [2024-11-16 02:40:58,519 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 02:40:58,522 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 [2024-11-16 02:40:58,525 INFO L432 NwaCegarLoop]: 48 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, 48 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 [2024-11-16 02:40:58,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:40:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 02:40:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 02:40:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2024-11-16 02:40:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-16 02:40:58,557 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 24 [2024-11-16 02:40:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:58,557 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-16 02:40:58,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-16 02:40:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-16 02:40:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 02:40:58,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:58,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:40:58,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:40:58,562 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:58,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash -574098649, now seen corresponding path program 1 times [2024-11-16 02:40:58,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901289732] [2024-11-16 02:40:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:40:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901289732] [2024-11-16 02:40:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901289732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:40:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:40:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:40:58,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840765911] [2024-11-16 02:40:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:40:58,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:40:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:40:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:40:58,728 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-16 02:40:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:58,809 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-11-16 02:40:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:40:58,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2024-11-16 02:40:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:58,812 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:40:58,812 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:40:58,813 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 [2024-11-16 02:40:58,815 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:40:58,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:40:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:40:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 02:40:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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) [2024-11-16 02:40:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-16 02:40:58,827 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2024-11-16 02:40:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:58,828 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-16 02:40:58,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-16 02:40:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-16 02:40:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 02:40:58,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:58,829 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, 1, 1, 1, 1, 1, 1] [2024-11-16 02:40:58,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:40:58,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:58,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1400095354, now seen corresponding path program 1 times [2024-11-16 02:40:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595162092] [2024-11-16 02:40:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:40:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595162092] [2024-11-16 02:40:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595162092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:40:58,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:40:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:40:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079670194] [2024-11-16 02:40:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:40:59,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:40:59,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:59,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:40:59,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:40:59,001 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2024-11-16 02:40:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:59,128 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-11-16 02:40:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:40:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) Word has length 35 [2024-11-16 02:40:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:59,130 INFO L225 Difference]: With dead ends: 78 [2024-11-16 02:40:59,130 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 02:40:59,130 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 [2024-11-16 02:40:59,131 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:40:59,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 37 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:40:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 02:40:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-16 02:40:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 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) [2024-11-16 02:40:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-16 02:40:59,140 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 35 [2024-11-16 02:40:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:59,141 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-16 02:40:59,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2024-11-16 02:40:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-16 02:40:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 02:40:59,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:59,143 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:40:59,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:40:59,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:59,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -951344250, now seen corresponding path program 1 times [2024-11-16 02:40:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919712619] [2024-11-16 02:40:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:40:59,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:59,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919712619] [2024-11-16 02:40:59,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919712619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:40:59,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460524093] [2024-11-16 02:40:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:59,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:40:59,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:59,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:40:59,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:40:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:59,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:40:59,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:40:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:40:59,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:40:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:40:59,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460524093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:40:59,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:40:59,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:40:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316867709] [2024-11-16 02:40:59,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:40:59,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:40:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:40:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:40:59,587 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-16 02:40:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:59,679 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2024-11-16 02:40:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:40:59,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2024-11-16 02:40:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:59,680 INFO L225 Difference]: With dead ends: 99 [2024-11-16 02:40:59,680 INFO L226 Difference]: Without dead ends: 54 [2024-11-16 02:40:59,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:40:59,682 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:40:59,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:40:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-16 02:40:59,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-16 02:40:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 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) [2024-11-16 02:40:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-16 02:40:59,691 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2024-11-16 02:40:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:59,691 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-16 02:40:59,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-16 02:40:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-16 02:40:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 02:40:59,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:59,693 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:40:59,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:40:59,894 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 [2024-11-16 02:40:59,894 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:59,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2139862053, now seen corresponding path program 2 times [2024-11-16 02:40:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:59,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903908003] [2024-11-16 02:40:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:41:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903908003] [2024-11-16 02:41:00,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903908003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359199661] [2024-11-16 02:41:00,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:41:00,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:00,070 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) [2024-11-16 02:41:00,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:41:00,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:41:00,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:00,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:41:00,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:41:00,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:41:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359199661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:00,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-16 02:41:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759338473] [2024-11-16 02:41:00,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:00,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:41:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:41:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:41:00,349 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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) [2024-11-16 02:41:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:00,463 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-11-16 02:41:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:41:00,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 53 [2024-11-16 02:41:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:00,465 INFO L225 Difference]: With dead ends: 110 [2024-11-16 02:41:00,465 INFO L226 Difference]: Without dead ends: 70 [2024-11-16 02:41:00,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:41:00,468 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:00,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 63 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:41:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-16 02:41:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-16 02:41:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 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) [2024-11-16 02:41:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2024-11-16 02:41:00,480 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 53 [2024-11-16 02:41:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:00,481 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2024-11-16 02:41:00,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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) [2024-11-16 02:41:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2024-11-16 02:41:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 02:41:00,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:00,485 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:41:00,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:41:00,685 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 [2024-11-16 02:41:00,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:00,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1021008421, now seen corresponding path program 3 times [2024-11-16 02:41:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:00,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425500026] [2024-11-16 02:41:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425500026] [2024-11-16 02:41:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425500026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289901] [2024-11-16 02:41:04,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:41:04,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:04,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:04,154 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) [2024-11-16 02:41:04,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:41:04,242 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:41:04,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:04,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-16 02:41:04,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:05,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:41:05,241 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 15 treesize of output 14 [2024-11-16 02:41:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:05,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:06,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:41:06,248 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 35 treesize of output 51 [2024-11-16 02:41:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:06,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 28] total 50 [2024-11-16 02:41:06,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246975198] [2024-11-16 02:41:06,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:06,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-16 02:41:06,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-16 02:41:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:41:06,613 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 50 states, 50 states have (on average 3.86) internal successors, (193), 50 states have internal predecessors, (193), 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) [2024-11-16 02:41:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:08,079 INFO L93 Difference]: Finished difference Result 185 states and 209 transitions. [2024-11-16 02:41:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:41:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.86) internal successors, (193), 50 states have internal predecessors, (193), 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 [2024-11-16 02:41:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:08,083 INFO L225 Difference]: With dead ends: 185 [2024-11-16 02:41:08,083 INFO L226 Difference]: Without dead ends: 179 [2024-11-16 02:41:08,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=453, Invalid=4103, Unknown=0, NotChecked=0, Total=4556 [2024-11-16 02:41:08,085 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 106 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:08,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 846 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:41:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-16 02:41:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2024-11-16 02:41:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 116 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) [2024-11-16 02:41:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2024-11-16 02:41:08,102 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 69 [2024-11-16 02:41:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:08,102 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2024-11-16 02:41:08,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.86) internal successors, (193), 50 states have internal predecessors, (193), 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) [2024-11-16 02:41:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2024-11-16 02:41:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 02:41:08,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:08,106 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:41:08,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:41:08,306 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 [2024-11-16 02:41:08,307 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:08,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash -62322682, now seen corresponding path program 4 times [2024-11-16 02:41:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246098333] [2024-11-16 02:41:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:41:08,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246098333] [2024-11-16 02:41:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246098333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064521771] [2024-11-16 02:41:08,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:41:08,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:08,449 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) [2024-11-16 02:41:08,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:41:08,517 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:41:08,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:08,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:41:08,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:41:08,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:41:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064521771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:08,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:41:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807249340] [2024-11-16 02:41:08,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:08,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:41:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:41:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:41:08,663 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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) [2024-11-16 02:41:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:08,908 INFO L93 Difference]: Finished difference Result 247 states and 283 transitions. [2024-11-16 02:41:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 02:41:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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 [2024-11-16 02:41:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:08,910 INFO L225 Difference]: With dead ends: 247 [2024-11-16 02:41:08,910 INFO L226 Difference]: Without dead ends: 135 [2024-11-16 02:41:08,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-16 02:41:08,911 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 118 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:08,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 198 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:41:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-16 02:41:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 128. [2024-11-16 02:41:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.1181102362204725) internal successors, (142), 127 states have internal predecessors, (142), 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) [2024-11-16 02:41:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2024-11-16 02:41:08,932 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 71 [2024-11-16 02:41:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:08,932 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2024-11-16 02:41:08,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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) [2024-11-16 02:41:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2024-11-16 02:41:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 02:41:08,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:08,936 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1] [2024-11-16 02:41:08,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:41:09,136 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 [2024-11-16 02:41:09,136 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:09,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2053738853, now seen corresponding path program 5 times [2024-11-16 02:41:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:09,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847237846] [2024-11-16 02:41:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 02:41:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847237846] [2024-11-16 02:41:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847237846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971123722] [2024-11-16 02:41:09,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:41:09,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:09,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:09,285 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) [2024-11-16 02:41:09,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:41:09,372 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 02:41:09,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:09,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:41:09,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 02:41:09,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 02:41:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971123722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:09,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 02:41:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664716886] [2024-11-16 02:41:09,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:09,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:41:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:41:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:41:09,626 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 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) [2024-11-16 02:41:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:09,840 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2024-11-16 02:41:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 02:41:09,841 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 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 73 [2024-11-16 02:41:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:09,843 INFO L225 Difference]: With dead ends: 135 [2024-11-16 02:41:09,844 INFO L226 Difference]: Without dead ends: 88 [2024-11-16 02:41:09,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:41:09,845 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 117 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:09,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 159 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:41:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-16 02:41:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-16 02:41:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 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) [2024-11-16 02:41:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2024-11-16 02:41:09,857 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 73 [2024-11-16 02:41:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:09,858 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2024-11-16 02:41:09,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 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) [2024-11-16 02:41:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2024-11-16 02:41:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 02:41:09,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:09,859 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1] [2024-11-16 02:41:09,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:41:10,060 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 [2024-11-16 02:41:10,061 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:10,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash 198674180, now seen corresponding path program 6 times [2024-11-16 02:41:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126006856] [2024-11-16 02:41:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:16,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126006856] [2024-11-16 02:41:16,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126006856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:16,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835043643] [2024-11-16 02:41:16,086 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:41:16,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:16,087 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) [2024-11-16 02:41:16,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:41:16,173 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 02:41:16,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:16,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-16 02:41:16,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:16,246 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 13 treesize of output 9 [2024-11-16 02:41:18,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:41:18,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 02:41:18,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:41:18,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 40 [2024-11-16 02:41:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:41:19,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:22,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-16 02:41:22,402 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-16 02:41:22,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 40 treesize of output 24 [2024-11-16 02:41:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:41:22,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835043643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:22,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:22,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 96 [2024-11-16 02:41:22,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885126694] [2024-11-16 02:41:22,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:22,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-16 02:41:22,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-16 02:41:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=8399, Unknown=1, NotChecked=0, Total=9120 [2024-11-16 02:41:22,488 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 96 states, 96 states have (on average 2.5729166666666665) internal successors, (247), 96 states have internal predecessors, (247), 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) [2024-11-16 02:41:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:30,746 INFO L93 Difference]: Finished difference Result 401 states and 447 transitions. [2024-11-16 02:41:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-16 02:41:30,747 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.5729166666666665) internal successors, (247), 96 states have internal predecessors, (247), 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 87 [2024-11-16 02:41:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:30,748 INFO L225 Difference]: With dead ends: 401 [2024-11-16 02:41:30,748 INFO L226 Difference]: Without dead ends: 326 [2024-11-16 02:41:30,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2071, Invalid=16560, Unknown=1, NotChecked=0, Total=18632 [2024-11-16 02:41:30,752 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1709 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 4114 mSolverCounterSat, 1499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 5613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1499 IncrementalHoareTripleChecker+Valid, 4114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:30,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 3223 Invalid, 5613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1499 Valid, 4114 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-16 02:41:30,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-16 02:41:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 251. [2024-11-16 02:41:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.1) internal successors, (275), 250 states have internal predecessors, (275), 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) [2024-11-16 02:41:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 275 transitions. [2024-11-16 02:41:30,788 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 275 transitions. Word has length 87 [2024-11-16 02:41:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:30,788 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 275 transitions. [2024-11-16 02:41:30,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.5729166666666665) internal successors, (247), 96 states have internal predecessors, (247), 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) [2024-11-16 02:41:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 275 transitions. [2024-11-16 02:41:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 02:41:30,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:30,790 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1] [2024-11-16 02:41:30,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:41:30,991 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 [2024-11-16 02:41:30,992 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:30,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash -425702621, now seen corresponding path program 7 times [2024-11-16 02:41:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:30,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367917167] [2024-11-16 02:41:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:30,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 02:41:31,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367917167] [2024-11-16 02:41:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367917167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956109349] [2024-11-16 02:41:31,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:41:31,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:31,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:31,148 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) [2024-11-16 02:41:31,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:41:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:31,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:41:31,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 02:41:31,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 02:41:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956109349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:31,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:31,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 02:41:31,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584751607] [2024-11-16 02:41:31,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:31,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:41:31,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:31,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:41:31,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:41:31,503 INFO L87 Difference]: Start difference. First operand 251 states and 275 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 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) [2024-11-16 02:41:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:31,779 INFO L93 Difference]: Finished difference Result 384 states and 423 transitions. [2024-11-16 02:41:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:41:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 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 89 [2024-11-16 02:41:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:31,781 INFO L225 Difference]: With dead ends: 384 [2024-11-16 02:41:31,781 INFO L226 Difference]: Without dead ends: 106 [2024-11-16 02:41:31,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 165 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:41:31,782 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 135 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:31,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 224 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:41:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-16 02:41:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-16 02:41:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0857142857142856) internal successors, (114), 105 states have internal predecessors, (114), 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) [2024-11-16 02:41:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2024-11-16 02:41:31,800 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 89 [2024-11-16 02:41:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:31,801 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2024-11-16 02:41:31,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 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) [2024-11-16 02:41:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2024-11-16 02:41:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-16 02:41:31,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:31,802 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1] [2024-11-16 02:41:31,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:41:32,002 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 [2024-11-16 02:41:32,003 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:32,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1207657949, now seen corresponding path program 8 times [2024-11-16 02:41:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817816355] [2024-11-16 02:41:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 2 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817816355] [2024-11-16 02:41:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817816355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204171311] [2024-11-16 02:41:37,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:41:37,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:37,730 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) [2024-11-16 02:41:37,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:41:37,808 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:41:37,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:37,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-16 02:41:37,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:37,918 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 11 treesize of output 7 [2024-11-16 02:41:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:38,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:41:39,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204171311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:39,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:39,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 18, 13] total 63 [2024-11-16 02:41:39,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678448984] [2024-11-16 02:41:39,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:39,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-16 02:41:39,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-16 02:41:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3667, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 02:41:39,771 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand has 63 states, 63 states have (on average 4.603174603174603) internal successors, (290), 63 states have internal predecessors, (290), 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) [2024-11-16 02:41:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:43,881 INFO L93 Difference]: Finished difference Result 366 states and 404 transitions. [2024-11-16 02:41:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-16 02:41:43,881 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.603174603174603) internal successors, (290), 63 states have internal predecessors, (290), 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 105 [2024-11-16 02:41:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:43,883 INFO L225 Difference]: With dead ends: 366 [2024-11-16 02:41:43,883 INFO L226 Difference]: Without dead ends: 280 [2024-11-16 02:41:43,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=999, Invalid=9303, Unknown=0, NotChecked=0, Total=10302 [2024-11-16 02:41:43,885 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 1088 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 3622 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 4522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 3622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:43,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 2852 Invalid, 4522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 3622 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 02:41:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-16 02:41:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 113. [2024-11-16 02:41:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0892857142857142) internal successors, (122), 112 states have internal predecessors, (122), 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) [2024-11-16 02:41:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2024-11-16 02:41:43,908 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 105 [2024-11-16 02:41:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:43,908 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2024-11-16 02:41:43,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.603174603174603) internal successors, (290), 63 states have internal predecessors, (290), 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) [2024-11-16 02:41:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2024-11-16 02:41:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 02:41:43,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:43,909 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1] [2024-11-16 02:41:43,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:41:44,113 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 [2024-11-16 02:41:44,113 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:44,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1003819650, now seen corresponding path program 9 times [2024-11-16 02:41:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:44,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030624422] [2024-11-16 02:41:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 02:41:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030624422] [2024-11-16 02:41:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030624422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482499000] [2024-11-16 02:41:44,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:41:44,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:44,302 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) [2024-11-16 02:41:44,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:41:44,399 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:41:44,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:44,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:41:44,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 02:41:44,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 02:41:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482499000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:44,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 02:41:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114201313] [2024-11-16 02:41:44,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:44,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:41:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:41:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:41:44,735 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2024-11-16 02:41:45,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:45,103 INFO L93 Difference]: Finished difference Result 298 states and 327 transitions. [2024-11-16 02:41:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:41:45,103 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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 107 [2024-11-16 02:41:45,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:45,104 INFO L225 Difference]: With dead ends: 298 [2024-11-16 02:41:45,104 INFO L226 Difference]: Without dead ends: 124 [2024-11-16 02:41:45,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 198 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:41:45,105 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 225 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:45,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 284 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:41:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-16 02:41:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-16 02:41:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.0731707317073171) internal successors, (132), 123 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) [2024-11-16 02:41:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2024-11-16 02:41:45,122 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 107 [2024-11-16 02:41:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:45,123 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2024-11-16 02:41:45,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2024-11-16 02:41:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2024-11-16 02:41:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-16 02:41:45,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:45,124 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1] [2024-11-16 02:41:45,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:41:45,324 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 [2024-11-16 02:41:45,324 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:45,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash -762641534, now seen corresponding path program 10 times [2024-11-16 02:41:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565960750] [2024-11-16 02:41:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:41:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565960750] [2024-11-16 02:41:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565960750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355299410] [2024-11-16 02:41:52,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:41:52,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:52,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:52,898 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) [2024-11-16 02:41:52,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:41:53,001 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:41:53,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:41:53,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-11-16 02:41:53,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:41:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:41:54,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:41:54,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:41:54,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 86 treesize of output 235 [2024-11-16 02:41:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:41:55,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355299410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:41:55,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:41:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16, 16] total 73 [2024-11-16 02:41:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078505703] [2024-11-16 02:41:55,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:41:55,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-16 02:41:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:41:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-16 02:41:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=4958, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 02:41:55,786 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 73 states, 73 states have (on average 4.616438356164384) internal successors, (337), 73 states have internal predecessors, (337), 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) [2024-11-16 02:41:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:41:59,502 INFO L93 Difference]: Finished difference Result 381 states and 413 transitions. [2024-11-16 02:41:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-16 02:41:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.616438356164384) internal successors, (337), 73 states have internal predecessors, (337), 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 [2024-11-16 02:41:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:41:59,503 INFO L225 Difference]: With dead ends: 381 [2024-11-16 02:41:59,503 INFO L226 Difference]: Without dead ends: 279 [2024-11-16 02:41:59,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=813, Invalid=9489, Unknown=0, NotChecked=0, Total=10302 [2024-11-16 02:41:59,507 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 974 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 4746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:41:59,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 2938 Invalid, 4746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 02:41:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-16 02:41:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 236. [2024-11-16 02:41:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.0680851063829788) internal successors, (251), 235 states have internal predecessors, (251), 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) [2024-11-16 02:41:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 251 transitions. [2024-11-16 02:41:59,542 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 251 transitions. Word has length 123 [2024-11-16 02:41:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:41:59,543 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 251 transitions. [2024-11-16 02:41:59,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.616438356164384) internal successors, (337), 73 states have internal predecessors, (337), 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) [2024-11-16 02:41:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 251 transitions. [2024-11-16 02:41:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-16 02:41:59,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:41:59,544 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1] [2024-11-16 02:41:59,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:41:59,745 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 [2024-11-16 02:41:59,745 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:41:59,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:41:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash -832135135, now seen corresponding path program 11 times [2024-11-16 02:41:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:41:59,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647442605] [2024-11-16 02:41:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:41:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:41:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:41:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 02:41:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:41:59,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647442605] [2024-11-16 02:41:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647442605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:41:59,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370492901] [2024-11-16 02:41:59,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:41:59,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:41:59,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:41:59,910 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) [2024-11-16 02:41:59,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:42:00,176 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-16 02:42:00,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:00,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:42:00,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 02:42:00,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 02:42:00,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370492901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:00,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:00,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:42:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106628448] [2024-11-16 02:42:00,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:00,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:42:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:42:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:42:00,434 INFO L87 Difference]: Start difference. First operand 236 states and 251 transitions. Second operand has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 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) [2024-11-16 02:42:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:00,791 INFO L93 Difference]: Finished difference Result 408 states and 436 transitions. [2024-11-16 02:42:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:42:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 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 125 [2024-11-16 02:42:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:00,793 INFO L225 Difference]: With dead ends: 408 [2024-11-16 02:42:00,793 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 02:42:00,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 236 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:42:00,794 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 287 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:00,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 351 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:42:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 02:42:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-16 02:42:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0638297872340425) internal successors, (150), 141 states have internal predecessors, (150), 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) [2024-11-16 02:42:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2024-11-16 02:42:00,824 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 125 [2024-11-16 02:42:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:00,824 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2024-11-16 02:42:00,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 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) [2024-11-16 02:42:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2024-11-16 02:42:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-16 02:42:00,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:00,825 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1] [2024-11-16 02:42:00,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 02:42:01,025 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 [2024-11-16 02:42:01,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:01,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1862847711, now seen corresponding path program 12 times [2024-11-16 02:42:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431954759] [2024-11-16 02:42:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat