./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms1.c --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-fpi/ms1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:53:50,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:53:50,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:53:50,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:53:50,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:53:50,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:53:50,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:53:50,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:53:50,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:53:50,799 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:53:50,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:53:50,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:53:50,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:53:50,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:53:50,804 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:53:50,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:53:50,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:53:50,805 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:53:50,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:53:50,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:53:50,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:53:50,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:53:50,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:53:50,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:53:50,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:53:50,808 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:53:50,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:53:50,808 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:53:50,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:53:50,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:53:50,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:53:50,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:53:50,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:53:50,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:53:50,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:53:50,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:53:50,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:53:50,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:53:50,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:53:50,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:53:50,812 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:53:50,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:53:50,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e [2024-11-11 15:53:51,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:53:51,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:53:51,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:53:51,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:53:51,056 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:53:51,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms1.c [2024-11-11 15:53:52,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:53:52,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:53:52,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1.c [2024-11-11 15:53:52,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1937505c/5a45ff768083485a9d2ed6994c83525f/FLAGa7818636e [2024-11-11 15:53:52,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1937505c/5a45ff768083485a9d2ed6994c83525f [2024-11-11 15:53:52,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:53:52,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:53:52,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:53:52,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:53:52,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:53:52,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:53:52" (1/1) ... [2024-11-11 15:53:52,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ffd9dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:52, skipping insertion in model container [2024-11-11 15:53:52,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:53:52" (1/1) ... [2024-11-11 15:53:52,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:53:52,958 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-fpi/ms1.c[586,599] [2024-11-11 15:53:52,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:53:52,990 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:53:53,003 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-fpi/ms1.c[586,599] [2024-11-11 15:53:53,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:53:53,025 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:53:53,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53 WrapperNode [2024-11-11 15:53:53,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:53:53,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:53:53,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:53:53,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:53:53,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,067 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-11 15:53:53,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:53:53,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:53:53,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:53:53,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:53:53,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,097 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 6, 2, 4]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 3 writes are split as follows [0, 0, 1, 2]. [2024-11-11 15:53:53,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:53:53,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:53:53,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:53:53,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:53:53,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (1/1) ... [2024-11-11 15:53:53,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:53:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:53:53,153 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 15:53:53,155 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 15:53:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:53:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:53:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:53:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:53:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 15:53:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:53:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:53:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:53:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:53:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 15:53:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-11 15:53:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:53:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:53:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:53:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:53:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:53:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 15:53:53,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:53:53,311 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:53:53,315 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:53:53,488 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-11 15:53:53,489 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:53:53,501 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:53:53,503 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-11 15:53:53,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:53:53 BoogieIcfgContainer [2024-11-11 15:53:53,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:53:53,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:53:53,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:53:53,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:53:53,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:53:52" (1/3) ... [2024-11-11 15:53:53,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766dbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:53:53, skipping insertion in model container [2024-11-11 15:53:53,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:53:53" (2/3) ... [2024-11-11 15:53:53,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766dbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:53:53, skipping insertion in model container [2024-11-11 15:53:53,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:53:53" (3/3) ... [2024-11-11 15:53:53,512 INFO L112 eAbstractionObserver]: Analyzing ICFG ms1.c [2024-11-11 15:53:53,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:53:53,527 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:53:53,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:53:53,576 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;@41243c9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:53:53,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:53:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 15:53:53,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:53,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:53,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:53,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-11 15:53:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817276301] [2024-11-11 15:53:53,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817276301] [2024-11-11 15:53:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817276301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:53:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:53:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 15:53:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519159897] [2024-11-11 15:53:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:53:53,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 15:53:53,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 15:53:53,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:53:53,765 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:53:53,775 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-11 15:53:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 15:53:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-11 15:53:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:53:53,782 INFO L225 Difference]: With dead ends: 34 [2024-11-11 15:53:53,782 INFO L226 Difference]: Without dead ends: 15 [2024-11-11 15:53:53,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:53:53,788 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:53:53,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:53:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-11 15:53:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-11 15:53:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-11 15:53:53,818 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-11 15:53:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:53:53,818 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-11 15:53:53,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-11 15:53:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 15:53:53,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:53,820 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:53,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:53:53,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:53,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-11 15:53:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:53,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650681518] [2024-11-11 15:53:53,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:54,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650681518] [2024-11-11 15:53:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650681518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:53:54,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:53:54,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:53:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103576550] [2024-11-11 15:53:54,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:53:54,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:53:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:53:54,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:53:54,047 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:53:54,104 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-11 15:53:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:53:54,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-11 15:53:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:53:54,106 INFO L225 Difference]: With dead ends: 28 [2024-11-11 15:53:54,106 INFO L226 Difference]: Without dead ends: 20 [2024-11-11 15:53:54,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:53:54,108 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:53:54,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:53:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-11 15:53:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-11 15:53:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-11 15:53:54,117 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-11 15:53:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:53:54,119 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-11 15:53:54,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-11 15:53:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-11 15:53:54,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:54,121 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:54,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 15:53:54,122 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:54,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-11 15:53:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998463802] [2024-11-11 15:53:54,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:53:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:54,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998463802] [2024-11-11 15:53:54,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998463802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:53:54,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:53:54,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:53:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951628520] [2024-11-11 15:53:54,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:53:54,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:53:54,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:53:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:53:54,374 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:53:54,398 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-11 15:53:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:53:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-11 15:53:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:53:54,401 INFO L225 Difference]: With dead ends: 25 [2024-11-11 15:53:54,401 INFO L226 Difference]: Without dead ends: 21 [2024-11-11 15:53:54,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:53:54,402 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:53:54,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:53:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-11 15:53:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-11 15:53:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-11 15:53:54,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-11 15:53:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:53:54,411 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-11 15:53:54,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-11 15:53:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 15:53:54,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:54,412 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:54,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 15:53:54,413 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:54,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2024-11-11 15:53:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525922401] [2024-11-11 15:53:54,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:54,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525922401] [2024-11-11 15:53:54,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525922401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:53:54,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143424914] [2024-11-11 15:53:54,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:54,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:54,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:53:54,589 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 15:53:54,590 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 15:53:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:54,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:53:54,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:53:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:54,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:53:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143424914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:53:54,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:53:54,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:53:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647782615] [2024-11-11 15:53:54,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:53:54,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:53:54,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:53:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:53:54,879 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:53:54,981 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-11 15:53:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 15:53:54,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-11 15:53:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:53:54,983 INFO L225 Difference]: With dead ends: 39 [2024-11-11 15:53:54,983 INFO L226 Difference]: Without dead ends: 25 [2024-11-11 15:53:54,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:53:54,985 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:53:54,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:53:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-11 15:53:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-11 15:53:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-11 15:53:54,991 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-11 15:53:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:53:54,991 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-11 15:53:54,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-11 15:53:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-11 15:53:54,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:54,992 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:55,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:53:55,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:55,196 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:55,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2024-11-11 15:53:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157745122] [2024-11-11 15:53:55,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157745122] [2024-11-11 15:53:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157745122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:53:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909610141] [2024-11-11 15:53:55,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:53:55,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:55,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:53:55,685 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 15:53:55,686 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 15:53:55,758 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:53:55,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:53:55,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-11 15:53:55,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:53:55,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:53:55,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:53:56,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:53:56,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2024-11-11 15:53:56,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-11 15:53:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:56,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:53:56,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-11 15:53:56,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-11 15:53:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909610141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:53:56,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:53:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2024-11-11 15:53:56,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776105343] [2024-11-11 15:53:56,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:53:56,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-11 15:53:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-11 15:53:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:53:56,651 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:53:57,130 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-11 15:53:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-11 15:53:57,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-11 15:53:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:53:57,131 INFO L225 Difference]: With dead ends: 38 [2024-11-11 15:53:57,132 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 15:53:57,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2024-11-11 15:53:57,133 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:53:57,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 59 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:53:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 15:53:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-11 15:53:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-11 15:53:57,140 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-11-11 15:53:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:53:57,140 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-11 15:53:57,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-11 15:53:57,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 15:53:57,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:57,141 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:57,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 15:53:57,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:57,343 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:57,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:57,343 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2024-11-11 15:53:57,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047943384] [2024-11-11 15:53:57,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:57,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:57,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047943384] [2024-11-11 15:53:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047943384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:53:57,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404468861] [2024-11-11 15:53:57,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:53:57,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:57,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:53:57,461 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 15:53:57,463 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 15:53:57,539 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-11 15:53:57,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:53:57,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:53:57,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:53:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:57,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:53:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404468861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:53:57,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:53:57,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:53:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067258605] [2024-11-11 15:53:57,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:53:57,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:53:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:53:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:53:57,668 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:53:57,756 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-11 15:53:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 15:53:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-11 15:53:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:53:57,757 INFO L225 Difference]: With dead ends: 45 [2024-11-11 15:53:57,757 INFO L226 Difference]: Without dead ends: 30 [2024-11-11 15:53:57,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-11 15:53:57,758 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:53:57,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:53:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-11 15:53:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-11 15:53:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-11 15:53:57,769 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2024-11-11 15:53:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:53:57,769 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-11 15:53:57,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:53:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-11 15:53:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-11 15:53:57,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:53:57,771 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:53:57,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:53:57,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:57,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:53:57,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:53:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 4 times [2024-11-11 15:53:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:53:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084250497] [2024-11-11 15:53:57,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:53:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:53:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:53:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:53:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:53:58,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084250497] [2024-11-11 15:53:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084250497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:53:58,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280235508] [2024-11-11 15:53:58,726 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:53:58,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:53:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:53:58,728 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 15:53:58,730 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 15:53:58,789 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:53:58,790 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:53:58,791 WARN L254 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-11 15:53:58,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:53:58,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:53:58,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-11 15:53:58,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:53:59,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-11 15:53:59,260 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-11 15:53:59,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 55 [2024-11-11 15:53:59,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 33 [2024-11-11 15:53:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:53:59,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:53:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:53:59,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280235508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:53:59,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:53:59,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 41 [2024-11-11 15:53:59,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826317656] [2024-11-11 15:53:59,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:53:59,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-11 15:53:59,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:53:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-11 15:53:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1397, Unknown=0, NotChecked=0, Total=1640 [2024-11-11 15:53:59,917 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:01,279 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-11 15:54:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-11 15:54:01,279 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-11 15:54:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:01,280 INFO L225 Difference]: With dead ends: 41 [2024-11-11 15:54:01,280 INFO L226 Difference]: Without dead ends: 37 [2024-11-11 15:54:01,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=723, Invalid=3567, Unknown=0, NotChecked=0, Total=4290 [2024-11-11 15:54:01,285 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:01,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 72 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:54:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-11 15:54:01,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-11 15:54:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-11 15:54:01,300 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 26 [2024-11-11 15:54:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:01,300 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-11 15:54:01,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-11 15:54:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-11 15:54:01,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:01,301 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:01,321 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 15:54:01,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:01,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:01,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 222381825, now seen corresponding path program 5 times [2024-11-11 15:54:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368163708] [2024-11-11 15:54:01,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368163708] [2024-11-11 15:54:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368163708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960401735] [2024-11-11 15:54:01,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:54:01,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:01,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:01,682 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 15:54:01,683 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 15:54:01,762 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-11 15:54:01,762 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:01,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:54:01,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:01,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 42 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960401735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:01,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:01,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-11 15:54:01,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666840990] [2024-11-11 15:54:01,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:01,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-11 15:54:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-11 15:54:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:54:01,986 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:02,179 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-11-11 15:54:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-11 15:54:02,180 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-11 15:54:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:02,181 INFO L225 Difference]: With dead ends: 86 [2024-11-11 15:54:02,181 INFO L226 Difference]: Without dead ends: 45 [2024-11-11 15:54:02,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2024-11-11 15:54:02,182 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:02,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 46 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:54:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-11 15:54:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-11 15:54:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-11 15:54:02,189 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 35 [2024-11-11 15:54:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:02,189 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-11 15:54:02,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-11 15:54:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-11 15:54:02,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:02,190 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:02,204 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 15:54:02,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:02,391 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:02,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1463861959, now seen corresponding path program 6 times [2024-11-11 15:54:02,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:02,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202587550] [2024-11-11 15:54:02,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:04,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:04,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202587550] [2024-11-11 15:54:04,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202587550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:04,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627999111] [2024-11-11 15:54:04,109 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:54:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:04,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:04,111 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 15:54:04,113 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 15:54:04,223 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-11 15:54:04,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:04,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-11 15:54:04,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:04,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:04,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:54:04,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:04,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-11 15:54:04,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:04,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-11 15:54:04,406 INFO L349 Elim1Store]: treesize reduction 64, result has 31.2 percent of original size [2024-11-11 15:54:04,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 50 [2024-11-11 15:54:04,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:04,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:04,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:05,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:05,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:05,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:05,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:05,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 37 [2024-11-11 15:54:05,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-11 15:54:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:05,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:06,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 147 [2024-11-11 15:54:06,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:06,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 436965 treesize of output 371429 [2024-11-11 15:54:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627999111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:06,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 31] total 65 [2024-11-11 15:54:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653438486] [2024-11-11 15:54:06,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:06,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-11 15:54:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-11 15:54:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=3614, Unknown=0, NotChecked=0, Total=4160 [2024-11-11 15:54:06,963 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:08,797 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-11 15:54:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-11 15:54:08,798 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-11 15:54:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:08,798 INFO L225 Difference]: With dead ends: 54 [2024-11-11 15:54:08,798 INFO L226 Difference]: Without dead ends: 50 [2024-11-11 15:54:08,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1399, Invalid=7721, Unknown=0, NotChecked=0, Total=9120 [2024-11-11 15:54:08,801 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 155 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:08,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 126 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 15:54:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-11 15:54:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-11 15:54:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-11 15:54:08,813 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 41 [2024-11-11 15:54:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:08,813 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-11 15:54:08,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:08,814 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-11 15:54:08,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-11 15:54:08,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:08,815 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:08,829 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 15:54:09,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:09,020 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:09,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 284195591, now seen corresponding path program 7 times [2024-11-11 15:54:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:09,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021943103] [2024-11-11 15:54:09,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:09,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 73 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:09,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021943103] [2024-11-11 15:54:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021943103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787428238] [2024-11-11 15:54:09,291 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:54:09,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:09,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:09,293 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 15:54:09,295 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 15:54:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:09,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 15:54:09,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 15:54:09,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 15:54:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787428238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:09,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 27 [2024-11-11 15:54:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457936207] [2024-11-11 15:54:09,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:09,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-11 15:54:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-11 15:54:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2024-11-11 15:54:09,699 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:09,879 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-11 15:54:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-11 15:54:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-11 15:54:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:09,881 INFO L225 Difference]: With dead ends: 81 [2024-11-11 15:54:09,882 INFO L226 Difference]: Without dead ends: 51 [2024-11-11 15:54:09,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2024-11-11 15:54:09,883 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:09,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 63 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:54:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-11 15:54:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-11 15:54:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-11 15:54:09,893 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 47 [2024-11-11 15:54:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:09,894 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-11 15:54:09,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-11 15:54:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-11 15:54:09,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:09,895 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:09,914 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 15:54:10,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:10,100 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:10,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2107054537, now seen corresponding path program 8 times [2024-11-11 15:54:10,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378030292] [2024-11-11 15:54:10,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:10,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:10,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378030292] [2024-11-11 15:54:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378030292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:10,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544513227] [2024-11-11 15:54:10,421 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:54:10,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:10,423 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 15:54:10,424 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 15:54:10,525 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:54:10,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:10,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-11 15:54:10,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:10,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:10,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544513227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:10,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:10,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-11 15:54:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320461275] [2024-11-11 15:54:10,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:10,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-11 15:54:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-11 15:54:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-11 15:54:10,924 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:11,119 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-11-11 15:54:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 15:54:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-11 15:54:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:11,121 INFO L225 Difference]: With dead ends: 85 [2024-11-11 15:54:11,121 INFO L226 Difference]: Without dead ends: 55 [2024-11-11 15:54:11,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 15:54:11,122 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:11,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 49 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:54:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-11 15:54:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-11-11 15:54:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-11 15:54:11,131 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49 [2024-11-11 15:54:11,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:11,131 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-11 15:54:11,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-11 15:54:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-11 15:54:11,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:11,132 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:11,146 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 15:54:11,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-11 15:54:11,332 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:11,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1527844875, now seen corresponding path program 9 times [2024-11-11 15:54:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100050833] [2024-11-11 15:54:11,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100050833] [2024-11-11 15:54:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100050833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678971405] [2024-11-11 15:54:14,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:54:14,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:14,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:14,557 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 15:54:14,559 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 15:54:14,695 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-11 15:54:14,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:14,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-11 15:54:14,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:14,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:14,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:54:14,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:14,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-11 15:54:14,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:14,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-11 15:54:14,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:14,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-11 15:54:15,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:15,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-11 15:54:15,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:15,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-11 15:54:15,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:15,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:15,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:15,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-11 15:54:15,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-11 15:54:16,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-11 15:54:16,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2024-11-11 15:54:16,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:16,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:16,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 116 treesize of output 250 [2024-11-11 15:54:16,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 140 [2024-11-11 15:54:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:17,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:19,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 123 [2024-11-11 15:54:19,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:19,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15048 treesize of output 14024 [2024-11-11 15:54:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678971405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:19,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 38] total 93 [2024-11-11 15:54:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885490586] [2024-11-11 15:54:19,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:19,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-11 15:54:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-11 15:54:19,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=7602, Unknown=0, NotChecked=0, Total=8556 [2024-11-11 15:54:19,351 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 93 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:24,619 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-11-11 15:54:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-11 15:54:24,620 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-11 15:54:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:24,621 INFO L225 Difference]: With dead ends: 93 [2024-11-11 15:54:24,621 INFO L226 Difference]: Without dead ends: 61 [2024-11-11 15:54:24,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6243 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2354, Invalid=17106, Unknown=0, NotChecked=0, Total=19460 [2024-11-11 15:54:24,624 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 245 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:24,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 165 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 15:54:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-11 15:54:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-11 15:54:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-11 15:54:24,638 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 51 [2024-11-11 15:54:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:24,639 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-11 15:54:24,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-11 15:54:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-11 15:54:24,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:24,640 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:24,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-11 15:54:24,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:24,845 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:24,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1769776755, now seen corresponding path program 10 times [2024-11-11 15:54:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:24,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986476132] [2024-11-11 15:54:24,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:24,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 120 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:25,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986476132] [2024-11-11 15:54:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986476132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152653600] [2024-11-11 15:54:25,231 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:54:25,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:25,233 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 15:54:25,234 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 15:54:25,326 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:54:25,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:25,328 WARN L254 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-11 15:54:25,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:25,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:54:25,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-11 15:54:25,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:25,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-11 15:54:25,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:25,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-11 15:54:25,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:25,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 72 [2024-11-11 15:54:25,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:25,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 87 [2024-11-11 15:54:25,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:25,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 102 [2024-11-11 15:54:25,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:25,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 117 [2024-11-11 15:54:26,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:26,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 112 treesize of output 132 [2024-11-11 15:54:26,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:26,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-11 15:54:26,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-11-11 15:54:26,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2024-11-11 15:54:27,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2024-11-11 15:54:27,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-11 15:54:27,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2024-11-11 15:54:27,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-11 15:54:28,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2024-11-11 15:54:28,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 75 [2024-11-11 15:54:29,084 INFO L349 Elim1Store]: treesize reduction 288, result has 55.6 percent of original size [2024-11-11 15:54:29,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 179 treesize of output 404 [2024-11-11 15:54:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 73 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:29,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 9 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152653600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:31,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 45, 45] total 107 [2024-11-11 15:54:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390474300] [2024-11-11 15:54:31,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:31,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-11 15:54:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-11 15:54:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1479, Invalid=9863, Unknown=0, NotChecked=0, Total=11342 [2024-11-11 15:54:31,939 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 107 states, 107 states have (on average 1.5327102803738317) internal successors, (164), 107 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:45,101 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2024-11-11 15:54:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-11 15:54:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.5327102803738317) internal successors, (164), 107 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-11 15:54:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:45,101 INFO L225 Difference]: With dead ends: 109 [2024-11-11 15:54:45,102 INFO L226 Difference]: Without dead ends: 71 [2024-11-11 15:54:45,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10715 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=4879, Invalid=28793, Unknown=0, NotChecked=0, Total=33672 [2024-11-11 15:54:45,104 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 206 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:45,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 208 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-11 15:54:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-11 15:54:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-11-11 15:54:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-11-11 15:54:45,121 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59 [2024-11-11 15:54:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:45,121 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-11-11 15:54:45,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.5327102803738317) internal successors, (164), 107 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-11-11 15:54:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 15:54:45,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:45,122 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:45,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 15:54:45,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 15:54:45,323 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:45,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1467274603, now seen corresponding path program 11 times [2024-11-11 15:54:45,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:45,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650408149] [2024-11-11 15:54:45,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:45,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 148 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650408149] [2024-11-11 15:54:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650408149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739599203] [2024-11-11 15:54:45,712 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:54:45,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:45,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:45,714 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 15:54:45,716 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 15:54:46,103 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-11 15:54:46,104 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:46,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-11 15:54:46,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 176 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:46,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:54:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 157 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739599203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:54:46,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:54:46,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-11 15:54:46,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20336189] [2024-11-11 15:54:46,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:54:46,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-11 15:54:46,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:54:46,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-11 15:54:46,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-11 15:54:46,595 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:54:46,795 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-11-11 15:54:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-11 15:54:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-11 15:54:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:54:46,796 INFO L225 Difference]: With dead ends: 109 [2024-11-11 15:54:46,796 INFO L226 Difference]: Without dead ends: 70 [2024-11-11 15:54:46,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 94 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-11-11 15:54:46,798 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 89 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:54:46,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 49 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:54:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-11 15:54:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-11 15:54:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-11-11 15:54:46,818 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2024-11-11 15:54:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:54:46,818 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-11-11 15:54:46,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:54:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-11-11 15:54:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-11 15:54:46,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:54:46,819 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:54:46,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-11 15:54:47,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-11 15:54:47,019 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:54:47,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:54:47,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1556195347, now seen corresponding path program 12 times [2024-11-11 15:54:47,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:54:47,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123020561] [2024-11-11 15:54:47,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:54:47,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:54:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:54:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:52,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:54:52,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123020561] [2024-11-11 15:54:52,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123020561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:54:52,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062159520] [2024-11-11 15:54:52,414 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:54:52,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:54:52,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:54:52,415 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 15:54:52,416 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 15:54:52,666 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-11 15:54:52,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:54:52,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-11 15:54:52,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:54:52,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:52,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:54:52,741 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-11 15:54:52,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-11 15:54:52,834 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2024-11-11 15:54:52,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-11 15:54:52,942 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-11 15:54:52,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 58 [2024-11-11 15:54:53,056 INFO L349 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2024-11-11 15:54:53,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 61 treesize of output 72 [2024-11-11 15:54:53,190 INFO L349 Elim1Store]: treesize reduction 96, result has 13.5 percent of original size [2024-11-11 15:54:53,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 72 treesize of output 86 [2024-11-11 15:54:53,338 INFO L349 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2024-11-11 15:54:53,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 83 treesize of output 100 [2024-11-11 15:54:53,503 INFO L349 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2024-11-11 15:54:53,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 94 treesize of output 114 [2024-11-11 15:54:53,708 INFO L349 Elim1Store]: treesize reduction 144, result has 9.4 percent of original size [2024-11-11 15:54:53,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 105 treesize of output 128 [2024-11-11 15:54:54,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:54:54,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:54,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:54:54,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-11 15:54:54,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-11 15:54:55,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-11 15:54:55,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-11 15:54:55,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-11 15:54:55,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2024-11-11 15:54:56,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-11 15:54:56,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2024-11-11 15:54:56,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:54:56,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:54:56,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 117 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 150 treesize of output 334 [2024-11-11 15:54:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 65 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:54:57,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:55:00,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2024-11-11 15:55:00,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:55:00,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 137 [2024-11-11 15:55:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:55:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062159520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:55:00,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:55:00,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 50] total 126 [2024-11-11 15:55:00,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820280375] [2024-11-11 15:55:00,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:55:00,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-11 15:55:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:55:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-11 15:55:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1915, Invalid=13835, Unknown=0, NotChecked=0, Total=15750 [2024-11-11 15:55:00,598 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 126 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 126 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:55:10,814 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-11 15:55:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-11 15:55:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 126 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-11 15:55:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:55:10,815 INFO L225 Difference]: With dead ends: 79 [2024-11-11 15:55:10,815 INFO L226 Difference]: Without dead ends: 73 [2024-11-11 15:55:10,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10198 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=4023, Invalid=26427, Unknown=0, NotChecked=0, Total=30450 [2024-11-11 15:55:10,817 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 213 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:55:10,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 211 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-11 15:55:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-11 15:55:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-11 15:55:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-11-11 15:55:10,848 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2024-11-11 15:55:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:55:10,848 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-11-11 15:55:10,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 126 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-11-11 15:55:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-11 15:55:10,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:55:10,849 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:55:10,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-11 15:55:11,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-11 15:55:11,050 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:55:11,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:55:11,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1647626413, now seen corresponding path program 13 times [2024-11-11 15:55:11,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:55:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033333340] [2024-11-11 15:55:11,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:55:11,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:55:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:55:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 213 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:55:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:55:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033333340] [2024-11-11 15:55:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033333340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:55:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615785025] [2024-11-11 15:55:11,534 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:55:11,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:55:11,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:55:11,535 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 15:55:11,536 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 15:55:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:55:11,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-11 15:55:11,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:55:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 244 proven. 121 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 15:55:11,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:55:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 244 proven. 121 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 15:55:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615785025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:55:12,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:55:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 42 [2024-11-11 15:55:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6959896] [2024-11-11 15:55:12,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:55:12,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-11 15:55:12,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:55:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-11 15:55:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2024-11-11 15:55:12,229 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 42 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:55:12,506 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2024-11-11 15:55:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-11 15:55:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-11 15:55:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:55:12,507 INFO L225 Difference]: With dead ends: 121 [2024-11-11 15:55:12,507 INFO L226 Difference]: Without dead ends: 76 [2024-11-11 15:55:12,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 107 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=662, Invalid=2094, Unknown=0, NotChecked=0, Total=2756 [2024-11-11 15:55:12,508 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:55:12,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 51 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:55:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-11 15:55:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-11 15:55:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-11-11 15:55:12,533 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2024-11-11 15:55:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:55:12,533 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-11-11 15:55:12,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.761904761904762) internal successors, (116), 42 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-11-11 15:55:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-11 15:55:12,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:55:12,534 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:55:12,547 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 15:55:12,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 15:55:12,734 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:55:12,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:55:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash 534992593, now seen corresponding path program 14 times [2024-11-11 15:55:12,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:55:12,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879632882] [2024-11-11 15:55:12,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:55:12,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:55:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:55:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 213 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:55:13,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:55:13,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879632882] [2024-11-11 15:55:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879632882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:55:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963199576] [2024-11-11 15:55:13,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:55:13,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:55:13,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:55:13,247 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 15:55:13,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-11 15:55:13,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:55:13,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:55:13,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-11 15:55:13,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:55:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 247 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:55:13,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:55:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 247 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:55:14,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963199576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:55:14,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:55:14,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-11 15:55:14,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954719706] [2024-11-11 15:55:14,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:55:14,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-11 15:55:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:55:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-11 15:55:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-11 15:55:14,113 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:55:14,389 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-11-11 15:55:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-11 15:55:14,390 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-11 15:55:14,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:55:14,390 INFO L225 Difference]: With dead ends: 125 [2024-11-11 15:55:14,390 INFO L226 Difference]: Without dead ends: 80 [2024-11-11 15:55:14,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 108 SyntacticMatches, 25 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=747, Invalid=2333, Unknown=0, NotChecked=0, Total=3080 [2024-11-11 15:55:14,391 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:55:14,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 53 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:55:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-11 15:55:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-11-11 15:55:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-11 15:55:14,417 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2024-11-11 15:55:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:55:14,418 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-11 15:55:14,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:55:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-11 15:55:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-11 15:55:14,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:55:14,418 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:55:14,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-11 15:55:14,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:55:14,623 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:55:14,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:55:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2087816911, now seen corresponding path program 15 times [2024-11-11 15:55:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:55:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008828720] [2024-11-11 15:55:14,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:55:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:55:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat