./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bor3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/bor3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1b6ac589e17a1425c18d8694ea032f5464d66d6d18c040a40e1edc53bc0f3c5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:37:18,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:37:18,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:37:18,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:37:18,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:37:18,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:37:18,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:37:18,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:37:18,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:37:18,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:37:18,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:37:18,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:37:18,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:37:18,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:37:18,812 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:37:18,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:37:18,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:37:18,815 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:37:18,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:37:18,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:37:18,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:37:18,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:37:18,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:37:18,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:37:18,817 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:37:18,817 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:37:18,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:37:18,818 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:37:18,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:37:18,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:37:18,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:37:18,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:37:18,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:37:18,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:37:18,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:37:18,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:37:18,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:37:18,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:37:18,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:37:18,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:37:18,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:37:18,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:37:18,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b6ac589e17a1425c18d8694ea032f5464d66d6d18c040a40e1edc53bc0f3c5 [2024-11-11 15:37:19,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:37:19,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:37:19,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:37:19,082 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:37:19,082 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:37:19,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bor3.i [2024-11-11 15:37:20,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:37:20,640 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:37:20,641 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bor3.i [2024-11-11 15:37:20,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6093da5ef/87027c48f1ae4cda9078c600068f7516/FLAGe7987a9fa [2024-11-11 15:37:20,659 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6093da5ef/87027c48f1ae4cda9078c600068f7516 [2024-11-11 15:37:20,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:37:20,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:37:20,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:37:20,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:37:20,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:37:20,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:20,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196c31a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20, skipping insertion in model container [2024-11-11 15:37:20,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:20,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:37:20,885 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/bor3.i[1297,1310] [2024-11-11 15:37:20,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:37:20,896 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:37:20,915 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/bor3.i[1297,1310] [2024-11-11 15:37:20,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:37:20,932 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:37:20,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20 WrapperNode [2024-11-11 15:37:20,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:37:20,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:37:20,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:37:20,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:37:20,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:20,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:20,977 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-11-11 15:37:20,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:37:20,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:37:20,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:37:20,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:37:20,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:20,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:20,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,009 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-11 15:37:21,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:37:21,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:37:21,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:37:21,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:37:21,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (1/1) ... [2024-11-11 15:37:21,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:37:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:21,066 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) [2024-11-11 15:37:21,072 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 [2024-11-11 15:37:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:37:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2024-11-11 15:37:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2024-11-11 15:37:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:37:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:37:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:37:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:37:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:37:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:37:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:37:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:37:21,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:37:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:37:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:37:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:37:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:37:21,222 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:37:21,225 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:37:21,383 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-11 15:37:21,383 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:37:21,394 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:37:21,394 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:37:21,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:37:21 BoogieIcfgContainer [2024-11-11 15:37:21,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:37:21,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:37:21,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:37:21,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:37:21,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:37:20" (1/3) ... [2024-11-11 15:37:21,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212d3682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:37:21, skipping insertion in model container [2024-11-11 15:37:21,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:37:20" (2/3) ... [2024-11-11 15:37:21,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212d3682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:37:21, skipping insertion in model container [2024-11-11 15:37:21,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:37:21" (3/3) ... [2024-11-11 15:37:21,405 INFO L112 eAbstractionObserver]: Analyzing ICFG bor3.i [2024-11-11 15:37:21,421 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:37:21,421 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:37:21,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:37:21,473 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;@576863aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:37:21,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:37:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:37:21,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:21,482 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:21,483 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:21,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash 571232979, now seen corresponding path program 1 times [2024-11-11 15:37:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:21,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776828953] [2024-11-11 15:37:21,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:21,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 15:37:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:21,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 15:37:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:21,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-11 15:37:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-11 15:37:21,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776828953] [2024-11-11 15:37:21,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776828953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017367684] [2024-11-11 15:37:21,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:21,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:21,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:21,850 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) [2024-11-11 15:37:21,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:37:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:21,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 15:37:21,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:37:21,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:37:21,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017367684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:37:21,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:37:21,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-11 15:37:21,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471031651] [2024-11-11 15:37:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:37:21,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:37:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:37:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:37:22,020 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-11 15:37:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:22,056 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-11 15:37:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:37:22,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-11 15:37:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:22,066 INFO L225 Difference]: With dead ends: 60 [2024-11-11 15:37:22,066 INFO L226 Difference]: Without dead ends: 29 [2024-11-11 15:37:22,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:37:22,073 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:22,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:37:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-11 15:37:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-11 15:37:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-11 15:37:22,123 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-11-11 15:37:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:22,123 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-11 15:37:22,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-11 15:37:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-11 15:37:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-11 15:37:22,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:22,125 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:22,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-11 15:37:22,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-11 15:37:22,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:22,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash 572560753, now seen corresponding path program 1 times [2024-11-11 15:37:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:22,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587923332] [2024-11-11 15:37:22,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:22,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-11 15:37:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:22,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-11 15:37:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:22,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-11 15:37:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:37:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587923332] [2024-11-11 15:37:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587923332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:22,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114417547] [2024-11-11 15:37:22,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:22,506 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) [2024-11-11 15:37:22,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:37:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:22,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 15:37:22,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:37:22,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:37:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114417547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:37:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:37:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-11 15:37:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796319183] [2024-11-11 15:37:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:37:22,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:37:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:37:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:37:22,629 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:37:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:22,643 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2024-11-11 15:37:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:37:22,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-11 15:37:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:22,645 INFO L225 Difference]: With dead ends: 55 [2024-11-11 15:37:22,645 INFO L226 Difference]: Without dead ends: 34 [2024-11-11 15:37:22,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:37:22,647 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:22,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:37:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-11 15:37:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2024-11-11 15:37:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-11 15:37:22,655 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 31 [2024-11-11 15:37:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:22,656 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-11 15:37:22,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:37:22,657 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-11 15:37:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 15:37:22,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:22,658 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 15:37:22,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:37:22,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-11 15:37:22,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:22,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash -205733940, now seen corresponding path program 1 times [2024-11-11 15:37:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557823928] [2024-11-11 15:37:22,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:22,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-11 15:37:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-11 15:37:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-11 15:37:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:37:23,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557823928] [2024-11-11 15:37:23,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557823928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519368947] [2024-11-11 15:37:23,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:23,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:23,033 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) [2024-11-11 15:37:23,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:37:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 15:37:23,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:37:23,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:37:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519368947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:37:23,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:37:23,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-11 15:37:23,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388741253] [2024-11-11 15:37:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:37:23,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:37:23,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:37:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:37:23,138 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:37:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:23,156 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-11 15:37:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:37:23,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-11 15:37:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:23,160 INFO L225 Difference]: With dead ends: 48 [2024-11-11 15:37:23,160 INFO L226 Difference]: Without dead ends: 31 [2024-11-11 15:37:23,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:37:23,161 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:23,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:37:23,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-11 15:37:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-11 15:37:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-11 15:37:23,171 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 43 [2024-11-11 15:37:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:23,174 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-11 15:37:23,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:37:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-11 15:37:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-11 15:37:23,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:23,177 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 15:37:23,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-11 15:37:23,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:23,382 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:23,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash -346372054, now seen corresponding path program 1 times [2024-11-11 15:37:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:23,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017304402] [2024-11-11 15:37:23,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:23,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-11 15:37:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-11 15:37:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-11 15:37:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:37:23,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017304402] [2024-11-11 15:37:23,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017304402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:23,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045708449] [2024-11-11 15:37:23,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:23,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:23,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:23,528 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) [2024-11-11 15:37:23,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:37:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:23,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:37:23,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-11 15:37:23,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-11 15:37:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045708449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:23,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-11 15:37:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760392623] [2024-11-11 15:37:23,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:23,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 15:37:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 15:37:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-11 15:37:23,727 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:23,776 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2024-11-11 15:37:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:37:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-11 15:37:23,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:23,778 INFO L225 Difference]: With dead ends: 72 [2024-11-11 15:37:23,778 INFO L226 Difference]: Without dead ends: 47 [2024-11-11 15:37:23,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-11 15:37:23,780 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:23,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 88 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:37:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-11 15:37:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2024-11-11 15:37:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-11 15:37:23,787 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 45 [2024-11-11 15:37:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:23,788 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-11 15:37:23,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-11 15:37:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-11 15:37:23,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:23,793 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:23,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:37:23,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:23,994 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:23,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 520911199, now seen corresponding path program 2 times [2024-11-11 15:37:23,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:23,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79214833] [2024-11-11 15:37:23,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 15:37:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-11 15:37:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 15:37:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-11 15:37:24,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:24,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79214833] [2024-11-11 15:37:24,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79214833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943462158] [2024-11-11 15:37:24,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:37:24,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:24,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:24,136 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) [2024-11-11 15:37:24,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:37:24,231 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:37:24,232 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:24,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:37:24,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-11 15:37:24,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-11 15:37:24,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943462158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:24,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:24,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-11 15:37:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646815531] [2024-11-11 15:37:24,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:37:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:37:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:37:24,391 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 15:37:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:24,460 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-11 15:37:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 15:37:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-11 15:37:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:24,463 INFO L225 Difference]: With dead ends: 88 [2024-11-11 15:37:24,463 INFO L226 Difference]: Without dead ends: 57 [2024-11-11 15:37:24,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:37:24,465 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:24,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 106 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:37:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-11 15:37:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-11 15:37:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-11 15:37:24,479 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 63 [2024-11-11 15:37:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:24,480 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-11 15:37:24,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 15:37:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-11 15:37:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-11 15:37:24,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:24,483 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:24,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 15:37:24,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:24,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:24,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -617514511, now seen corresponding path program 3 times [2024-11-11 15:37:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520455549] [2024-11-11 15:37:24,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:37:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-11 15:37:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-11 15:37:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-11 15:37:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520455549] [2024-11-11 15:37:24,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520455549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:24,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505633664] [2024-11-11 15:37:24,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:37:24,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:24,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:24,856 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) [2024-11-11 15:37:24,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:37:24,953 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:37:24,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:24,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 15:37:24,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-11 15:37:24,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-11 15:37:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505633664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:25,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-11 15:37:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103756371] [2024-11-11 15:37:25,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:25,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 15:37:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:25,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 15:37:25,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-11 15:37:25,037 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:25,073 INFO L93 Difference]: Finished difference Result 111 states and 140 transitions. [2024-11-11 15:37:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:37:25,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-11 15:37:25,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:25,077 INFO L225 Difference]: With dead ends: 111 [2024-11-11 15:37:25,077 INFO L226 Difference]: Without dead ends: 80 [2024-11-11 15:37:25,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-11 15:37:25,078 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 50 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:25,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:37:25,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-11 15:37:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-11 15:37:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2) internal successors, (90), 75 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2024-11-11 15:37:25,093 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 77 [2024-11-11 15:37:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:25,093 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2024-11-11 15:37:25,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2024-11-11 15:37:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-11 15:37:25,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:25,095 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:25,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 15:37:25,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:25,302 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:25,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1183854685, now seen corresponding path program 4 times [2024-11-11 15:37:25,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:25,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768979645] [2024-11-11 15:37:25,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:25,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:25,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:37:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:25,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-11 15:37:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:25,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-11-11 15:37:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-11 15:37:25,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768979645] [2024-11-11 15:37:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768979645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504591512] [2024-11-11 15:37:25,667 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:37:25,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:25,669 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) [2024-11-11 15:37:25,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 15:37:25,807 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:37:25,807 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:25,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:37:25,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-11 15:37:25,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-11 15:37:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504591512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:26,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-11 15:37:26,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94460901] [2024-11-11 15:37:26,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:26,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-11 15:37:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-11 15:37:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-11 15:37:26,109 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:26,180 INFO L93 Difference]: Finished difference Result 161 states and 204 transitions. [2024-11-11 15:37:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-11 15:37:26,181 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 125 [2024-11-11 15:37:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:26,182 INFO L225 Difference]: With dead ends: 161 [2024-11-11 15:37:26,182 INFO L226 Difference]: Without dead ends: 104 [2024-11-11 15:37:26,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-11 15:37:26,183 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:26,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 199 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:37:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-11 15:37:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-11 15:37:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 99 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2024-11-11 15:37:26,192 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 125 [2024-11-11 15:37:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:26,192 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2024-11-11 15:37:26,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2024-11-11 15:37:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-11 15:37:26,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:26,195 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:26,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 15:37:26,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:26,399 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:26,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1815916741, now seen corresponding path program 5 times [2024-11-11 15:37:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670631834] [2024-11-11 15:37:26,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:26,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:27,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-11 15:37:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:27,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-11 15:37:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:27,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-11 15:37:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-11 15:37:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670631834] [2024-11-11 15:37:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670631834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684415180] [2024-11-11 15:37:27,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:37:27,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:27,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:27,129 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) [2024-11-11 15:37:27,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 15:37:27,976 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-11 15:37:27,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:27,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:37:27,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2024-11-11 15:37:28,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2024-11-11 15:37:28,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684415180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:28,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:28,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2024-11-11 15:37:28,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292545745] [2024-11-11 15:37:28,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:28,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-11 15:37:28,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-11 15:37:28,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2024-11-11 15:37:28,360 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:28,474 INFO L93 Difference]: Finished difference Result 212 states and 271 transitions. [2024-11-11 15:37:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-11 15:37:28,475 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 149 [2024-11-11 15:37:28,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:28,477 INFO L225 Difference]: With dead ends: 212 [2024-11-11 15:37:28,477 INFO L226 Difference]: Without dead ends: 155 [2024-11-11 15:37:28,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2024-11-11 15:37:28,479 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 123 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:28,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 243 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:37:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-11 15:37:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-11-11 15:37:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 149 states have internal predecessors, (180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 186 transitions. [2024-11-11 15:37:28,491 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 186 transitions. Word has length 149 [2024-11-11 15:37:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:28,491 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 186 transitions. [2024-11-11 15:37:28,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 186 transitions. [2024-11-11 15:37:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-11 15:37:28,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:28,496 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 23, 23, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:28,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 15:37:28,696 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,SelfDestructingSolverStorable7 [2024-11-11 15:37:28,697 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:28,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash 871112251, now seen corresponding path program 6 times [2024-11-11 15:37:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401620583] [2024-11-11 15:37:28,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:29,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-11 15:37:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:29,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-11 15:37:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:29,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-11 15:37:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 3589 trivial. 0 not checked. [2024-11-11 15:37:29,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:29,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401620583] [2024-11-11 15:37:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401620583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432704886] [2024-11-11 15:37:29,654 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:37:29,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:29,656 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) [2024-11-11 15:37:29,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 15:37:29,812 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-11 15:37:29,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:29,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 15:37:29,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 1634 proven. 4 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2024-11-11 15:37:29,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4114 trivial. 0 not checked. [2024-11-11 15:37:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432704886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:29,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:29,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5] total 32 [2024-11-11 15:37:29,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324682027] [2024-11-11 15:37:29,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:29,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-11 15:37:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-11 15:37:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2024-11-11 15:37:29,973 INFO L87 Difference]: Start difference. First operand 154 states and 186 transitions. Second operand has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:30,069 INFO L93 Difference]: Finished difference Result 270 states and 338 transitions. [2024-11-11 15:37:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-11 15:37:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 247 [2024-11-11 15:37:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:30,071 INFO L225 Difference]: With dead ends: 270 [2024-11-11 15:37:30,071 INFO L226 Difference]: Without dead ends: 165 [2024-11-11 15:37:30,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2024-11-11 15:37:30,073 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:30,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 182 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:37:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-11 15:37:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2024-11-11 15:37:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.1949685534591195) internal successors, (190), 159 states have internal predecessors, (190), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2024-11-11 15:37:30,082 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 247 [2024-11-11 15:37:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:30,083 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2024-11-11 15:37:30,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2024-11-11 15:37:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-11 15:37:30,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:30,086 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 24, 24, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:30,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-11 15:37:30,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:30,287 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:30,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 466440657, now seen corresponding path program 7 times [2024-11-11 15:37:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:30,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923641457] [2024-11-11 15:37:30,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:31,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-11 15:37:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:31,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-11 15:37:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:31,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-11-11 15:37:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:31,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:31,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923641457] [2024-11-11 15:37:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923641457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568647458] [2024-11-11 15:37:31,211 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:37:31,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:31,213 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) [2024-11-11 15:37:31,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 15:37:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:31,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-11 15:37:31,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:31,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:32,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568647458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:32,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:32,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-11-11 15:37:32,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962581796] [2024-11-11 15:37:32,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:32,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-11 15:37:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-11 15:37:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-11 15:37:32,459 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:32,605 INFO L93 Difference]: Finished difference Result 329 states and 418 transitions. [2024-11-11 15:37:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-11 15:37:32,606 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 257 [2024-11-11 15:37:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:32,607 INFO L225 Difference]: With dead ends: 329 [2024-11-11 15:37:32,607 INFO L226 Difference]: Without dead ends: 216 [2024-11-11 15:37:32,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-11 15:37:32,610 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:32,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 199 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:37:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-11 15:37:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-11 15:37:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.146919431279621) internal successors, (242), 211 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2024-11-11 15:37:32,627 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 257 [2024-11-11 15:37:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:32,627 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2024-11-11 15:37:32,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2024-11-11 15:37:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-11 15:37:32,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:32,632 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 42, 42, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:32,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-11 15:37:32,835 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,SelfDestructingSolverStorable9 [2024-11-11 15:37:32,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:32,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1677873757, now seen corresponding path program 8 times [2024-11-11 15:37:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110552172] [2024-11-11 15:37:32,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:35,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-11 15:37:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:35,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-11 15:37:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:35,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-11-11 15:37:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110552172] [2024-11-11 15:37:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110552172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094665521] [2024-11-11 15:37:35,117 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:37:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:35,119 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) [2024-11-11 15:37:35,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 15:37:35,388 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:37:35,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:35,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-11 15:37:35,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:35,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:38,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094665521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:38,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:38,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 105 [2024-11-11 15:37:38,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998415866] [2024-11-11 15:37:38,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:38,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-11 15:37:38,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-11 15:37:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2024-11-11 15:37:38,516 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand has 105 states, 105 states have (on average 2.2285714285714286) internal successors, (234), 105 states have internal predecessors, (234), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:38,816 INFO L93 Difference]: Finished difference Result 433 states and 548 transitions. [2024-11-11 15:37:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-11 15:37:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.2285714285714286) internal successors, (234), 105 states have internal predecessors, (234), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 309 [2024-11-11 15:37:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:38,819 INFO L225 Difference]: With dead ends: 433 [2024-11-11 15:37:38,819 INFO L226 Difference]: Without dead ends: 320 [2024-11-11 15:37:38,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2024-11-11 15:37:38,823 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:38,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:37:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-11 15:37:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-11 15:37:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.0984126984126985) internal successors, (346), 315 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 352 transitions. [2024-11-11 15:37:38,839 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 352 transitions. Word has length 309 [2024-11-11 15:37:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:38,839 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 352 transitions. [2024-11-11 15:37:38,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.2285714285714286) internal successors, (234), 105 states have internal predecessors, (234), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:37:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 352 transitions. [2024-11-11 15:37:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-11 15:37:38,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:38,845 INFO L218 NwaCegarLoop]: trace histogram [102, 102, 42, 42, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:38,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-11 15:37:39,049 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,SelfDestructingSolverStorable10 [2024-11-11 15:37:39,050 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:39,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1657632395, now seen corresponding path program 9 times [2024-11-11 15:37:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060837015] [2024-11-11 15:37:39,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:45,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-11-11 15:37:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:45,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-11-11 15:37:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:45,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-11-11 15:37:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-11 15:37:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060837015] [2024-11-11 15:37:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060837015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362543882] [2024-11-11 15:37:45,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:37:45,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:45,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:45,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:37:45,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 15:37:45,763 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-11 15:37:45,763 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:45,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 15:37:45,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 1634 proven. 36 refuted. 0 times theorem prover too weak. 12355 trivial. 0 not checked. [2024-11-11 15:37:46,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:37:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13989 trivial. 0 not checked. [2024-11-11 15:37:46,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362543882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:37:46,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:37:46,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 9, 9] total 119 [2024-11-11 15:37:46,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179998523] [2024-11-11 15:37:46,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:37:46,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-11 15:37:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:37:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-11 15:37:46,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2024-11-11 15:37:46,446 INFO L87 Difference]: Start difference. First operand 320 states and 352 transitions. Second operand has 119 states, 119 states have (on average 2.2436974789915967) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:37:46,955 INFO L93 Difference]: Finished difference Result 452 states and 524 transitions. [2024-11-11 15:37:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-11 15:37:46,956 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.2436974789915967) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 413 [2024-11-11 15:37:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:37:46,960 INFO L225 Difference]: With dead ends: 452 [2024-11-11 15:37:46,960 INFO L226 Difference]: Without dead ends: 339 [2024-11-11 15:37:46,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2024-11-11 15:37:46,965 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:37:46,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 311 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:37:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-11 15:37:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2024-11-11 15:37:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 333 states have (on average 1.093093093093093) internal successors, (364), 333 states have internal predecessors, (364), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:37:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 370 transitions. [2024-11-11 15:37:46,981 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 370 transitions. Word has length 413 [2024-11-11 15:37:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:37:46,982 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 370 transitions. [2024-11-11 15:37:46,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.2436974789915967) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:37:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 370 transitions. [2024-11-11 15:37:46,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-11 15:37:46,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:37:46,992 INFO L218 NwaCegarLoop]: trace histogram [103, 103, 42, 42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:37:47,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-11 15:37:47,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-11 15:37:47,193 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:37:47,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:37:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1448236291, now seen corresponding path program 10 times [2024-11-11 15:37:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:37:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230938887] [2024-11-11 15:37:47,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:37:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:37:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:53,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-11-11 15:37:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:53,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-11-11 15:37:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:53,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-11-11 15:37:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:37:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-11 15:37:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:37:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230938887] [2024-11-11 15:37:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230938887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:37:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147253872] [2024-11-11 15:37:53,545 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:37:53,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:37:53,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:37:53,547 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:37:53,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-11 15:37:53,976 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:37:53,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:37:53,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-11 15:37:53,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:37:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-11 15:37:54,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:38:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-11 15:38:05,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147253872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:38:05,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:38:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 211 [2024-11-11 15:38:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640738007] [2024-11-11 15:38:05,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:38:05,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 211 states [2024-11-11 15:38:05,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:38:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2024-11-11 15:38:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2024-11-11 15:38:05,166 INFO L87 Difference]: Start difference. First operand 338 states and 370 transitions. Second operand has 211 states, 211 states have (on average 2.1137440758293837) internal successors, (446), 211 states have internal predecessors, (446), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:38:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:38:06,110 INFO L93 Difference]: Finished difference Result 677 states and 845 transitions. [2024-11-11 15:38:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-11-11 15:38:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 211 states, 211 states have (on average 2.1137440758293837) internal successors, (446), 211 states have internal predecessors, (446), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2024-11-11 15:38:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:38:06,114 INFO L225 Difference]: With dead ends: 677 [2024-11-11 15:38:06,114 INFO L226 Difference]: Without dead ends: 548 [2024-11-11 15:38:06,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2024-11-11 15:38:06,119 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:38:06,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 227 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:38:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-11 15:38:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-11 15:38:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 543 states have (on average 1.0570902394106814) internal successors, (574), 543 states have internal predecessors, (574), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:38:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 580 transitions. [2024-11-11 15:38:06,134 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 580 transitions. Word has length 431 [2024-11-11 15:38:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:38:06,134 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 580 transitions. [2024-11-11 15:38:06,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 211 states, 211 states have (on average 2.1137440758293837) internal successors, (446), 211 states have internal predecessors, (446), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:38:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 580 transitions. [2024-11-11 15:38:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-11-11 15:38:06,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:38:06,139 INFO L218 NwaCegarLoop]: trace histogram [208, 208, 42, 42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:38:06,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-11 15:38:06,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 15:38:06,340 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:38:06,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:38:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash 357505617, now seen corresponding path program 11 times [2024-11-11 15:38:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:38:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333966973] [2024-11-11 15:38:06,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:38:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:38:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:38:29,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2024-11-11 15:38:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:38:29,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-11-11 15:38:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:38:29,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2024-11-11 15:38:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:38:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 47045 backedges. 0 proven. 43264 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-11 15:38:29,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:38:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333966973] [2024-11-11 15:38:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333966973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:38:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491924573] [2024-11-11 15:38:29,489 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:38:29,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:38:29,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:38:29,490 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:38:29,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process